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nl80211: clear skb cb before passing to netlink
[deliverable/linux.git] / net / wireless / nl80211.c
1 /*
2 * This is the new netlink-based wireless configuration interface.
3 *
4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
5 */
6
7 #include <linux/if.h>
8 #include <linux/module.h>
9 #include <linux/err.h>
10 #include <linux/slab.h>
11 #include <linux/list.h>
12 #include <linux/if_ether.h>
13 #include <linux/ieee80211.h>
14 #include <linux/nl80211.h>
15 #include <linux/rtnetlink.h>
16 #include <linux/netlink.h>
17 #include <linux/etherdevice.h>
18 #include <net/net_namespace.h>
19 #include <net/genetlink.h>
20 #include <net/cfg80211.h>
21 #include <net/sock.h>
22 #include <net/inet_connection_sock.h>
23 #include "core.h"
24 #include "nl80211.h"
25 #include "reg.h"
26 #include "rdev-ops.h"
27
28 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
29 struct genl_info *info,
30 struct cfg80211_crypto_settings *settings,
31 int cipher_limit);
32
33 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
34 struct genl_info *info);
35 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
36 struct genl_info *info);
37
38 /* the netlink family */
39 static struct genl_family nl80211_fam = {
40 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
41 .name = NL80211_GENL_NAME, /* have users key off the name instead */
42 .hdrsize = 0, /* no private header */
43 .version = 1, /* no particular meaning now */
44 .maxattr = NL80211_ATTR_MAX,
45 .netnsok = true,
46 .pre_doit = nl80211_pre_doit,
47 .post_doit = nl80211_post_doit,
48 };
49
50 /* multicast groups */
51 enum nl80211_multicast_groups {
52 NL80211_MCGRP_CONFIG,
53 NL80211_MCGRP_SCAN,
54 NL80211_MCGRP_REGULATORY,
55 NL80211_MCGRP_MLME,
56 NL80211_MCGRP_VENDOR,
57 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
58 };
59
60 static const struct genl_multicast_group nl80211_mcgrps[] = {
61 [NL80211_MCGRP_CONFIG] = { .name = "config", },
62 [NL80211_MCGRP_SCAN] = { .name = "scan", },
63 [NL80211_MCGRP_REGULATORY] = { .name = "regulatory", },
64 [NL80211_MCGRP_MLME] = { .name = "mlme", },
65 [NL80211_MCGRP_VENDOR] = { .name = "vendor", },
66 #ifdef CONFIG_NL80211_TESTMODE
67 [NL80211_MCGRP_TESTMODE] = { .name = "testmode", }
68 #endif
69 };
70
71 /* returns ERR_PTR values */
72 static struct wireless_dev *
73 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
74 {
75 struct cfg80211_registered_device *rdev;
76 struct wireless_dev *result = NULL;
77 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
78 bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
79 u64 wdev_id;
80 int wiphy_idx = -1;
81 int ifidx = -1;
82
83 ASSERT_RTNL();
84
85 if (!have_ifidx && !have_wdev_id)
86 return ERR_PTR(-EINVAL);
87
88 if (have_ifidx)
89 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
90 if (have_wdev_id) {
91 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
92 wiphy_idx = wdev_id >> 32;
93 }
94
95 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
96 struct wireless_dev *wdev;
97
98 if (wiphy_net(&rdev->wiphy) != netns)
99 continue;
100
101 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
102 continue;
103
104 list_for_each_entry(wdev, &rdev->wdev_list, list) {
105 if (have_ifidx && wdev->netdev &&
106 wdev->netdev->ifindex == ifidx) {
107 result = wdev;
108 break;
109 }
110 if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
111 result = wdev;
112 break;
113 }
114 }
115
116 if (result)
117 break;
118 }
119
120 if (result)
121 return result;
122 return ERR_PTR(-ENODEV);
123 }
124
125 static struct cfg80211_registered_device *
126 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
127 {
128 struct cfg80211_registered_device *rdev = NULL, *tmp;
129 struct net_device *netdev;
130
131 ASSERT_RTNL();
132
133 if (!attrs[NL80211_ATTR_WIPHY] &&
134 !attrs[NL80211_ATTR_IFINDEX] &&
135 !attrs[NL80211_ATTR_WDEV])
136 return ERR_PTR(-EINVAL);
137
138 if (attrs[NL80211_ATTR_WIPHY])
139 rdev = cfg80211_rdev_by_wiphy_idx(
140 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
141
142 if (attrs[NL80211_ATTR_WDEV]) {
143 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
144 struct wireless_dev *wdev;
145 bool found = false;
146
147 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
148 if (tmp) {
149 /* make sure wdev exists */
150 list_for_each_entry(wdev, &tmp->wdev_list, list) {
151 if (wdev->identifier != (u32)wdev_id)
152 continue;
153 found = true;
154 break;
155 }
156
157 if (!found)
158 tmp = NULL;
159
160 if (rdev && tmp != rdev)
161 return ERR_PTR(-EINVAL);
162 rdev = tmp;
163 }
164 }
165
166 if (attrs[NL80211_ATTR_IFINDEX]) {
167 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
168 netdev = __dev_get_by_index(netns, ifindex);
169 if (netdev) {
170 if (netdev->ieee80211_ptr)
171 tmp = wiphy_to_rdev(
172 netdev->ieee80211_ptr->wiphy);
173 else
174 tmp = NULL;
175
176 /* not wireless device -- return error */
177 if (!tmp)
178 return ERR_PTR(-EINVAL);
179
180 /* mismatch -- return error */
181 if (rdev && tmp != rdev)
182 return ERR_PTR(-EINVAL);
183
184 rdev = tmp;
185 }
186 }
187
188 if (!rdev)
189 return ERR_PTR(-ENODEV);
190
191 if (netns != wiphy_net(&rdev->wiphy))
192 return ERR_PTR(-ENODEV);
193
194 return rdev;
195 }
196
197 /*
198 * This function returns a pointer to the driver
199 * that the genl_info item that is passed refers to.
200 *
201 * The result of this can be a PTR_ERR and hence must
202 * be checked with IS_ERR() for errors.
203 */
204 static struct cfg80211_registered_device *
205 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
206 {
207 return __cfg80211_rdev_from_attrs(netns, info->attrs);
208 }
209
210 /* policy for the attributes */
211 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
212 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
213 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
214 .len = 20-1 },
215 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
216
217 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
218 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
219 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
220 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
221 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
222
223 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
224 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
225 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
226 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
227 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
228
229 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
230 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
231 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
232
233 [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
234 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
235
236 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
237 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
238 .len = WLAN_MAX_KEY_LEN },
239 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
240 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
241 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
242 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
243 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
244
245 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
246 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
247 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
248 .len = IEEE80211_MAX_DATA_LEN },
249 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
250 .len = IEEE80211_MAX_DATA_LEN },
251 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
252 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
253 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
254 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
255 .len = NL80211_MAX_SUPP_RATES },
256 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
257 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
258 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
259 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
260 .len = IEEE80211_MAX_MESH_ID_LEN },
261 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
262
263 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
264 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
265
266 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
267 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
268 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
269 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
270 .len = NL80211_MAX_SUPP_RATES },
271 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
272
273 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
274 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
275
276 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
277
278 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
279 [NL80211_ATTR_IE] = { .type = NLA_BINARY,
280 .len = IEEE80211_MAX_DATA_LEN },
281 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
282 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
283
284 [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
285 .len = IEEE80211_MAX_SSID_LEN },
286 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
287 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
288 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
289 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
290 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
291 [NL80211_ATTR_STA_FLAGS2] = {
292 .len = sizeof(struct nl80211_sta_flag_update),
293 },
294 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
295 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
296 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
297 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
298 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
299 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
300 [NL80211_ATTR_PID] = { .type = NLA_U32 },
301 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
302 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
303 .len = WLAN_PMKID_LEN },
304 [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
305 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
306 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
307 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
308 .len = IEEE80211_MAX_DATA_LEN },
309 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
310 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
311 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
312 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
313 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
314 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
315 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
316 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
317 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
318 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
319 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
320 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
321 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
322 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
323 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
324 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
325 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
326 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
327 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
328 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
329 .len = IEEE80211_MAX_DATA_LEN },
330 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
331 .len = IEEE80211_MAX_DATA_LEN },
332 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
333 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
334 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
335 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
336 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
337 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
338 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
339 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
340 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
341 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
342 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
343 .len = IEEE80211_MAX_DATA_LEN },
344 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
345 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
346 [NL80211_ATTR_HT_CAPABILITY_MASK] = {
347 .len = NL80211_HT_CAPABILITY_LEN
348 },
349 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
350 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
351 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
352 [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
353 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
354 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
355 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
356 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
357 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
358 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
359 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
360 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
361 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
362 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
363 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
364 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
365 [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
366 .len = NL80211_VHT_CAPABILITY_LEN,
367 },
368 [NL80211_ATTR_MDID] = { .type = NLA_U16 },
369 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
370 .len = IEEE80211_MAX_DATA_LEN },
371 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
372 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
373 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
374 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
375 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
376 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
377 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
378 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
379 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
380 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
381 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
382 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
383 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
384 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
385 .len = IEEE80211_QOS_MAP_LEN_MAX },
386 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
387 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
388 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
389 [NL80211_ATTR_IFACE_SOCKET_OWNER] = { .type = NLA_FLAG },
390 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
391 };
392
393 /* policy for the key attributes */
394 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
395 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
396 [NL80211_KEY_IDX] = { .type = NLA_U8 },
397 [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
398 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
399 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
400 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
401 [NL80211_KEY_TYPE] = { .type = NLA_U32 },
402 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
403 };
404
405 /* policy for the key default flags */
406 static const struct nla_policy
407 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
408 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
409 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
410 };
411
412 /* policy for WoWLAN attributes */
413 static const struct nla_policy
414 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
415 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
416 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
417 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
418 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
419 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
420 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
421 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
422 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
423 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
424 };
425
426 static const struct nla_policy
427 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
428 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
429 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
430 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
431 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
432 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
433 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
434 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
435 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
436 },
437 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
438 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
439 },
440 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
441 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
442 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
443 };
444
445 /* policy for coalesce rule attributes */
446 static const struct nla_policy
447 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
448 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
449 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
450 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
451 };
452
453 /* policy for GTK rekey offload attributes */
454 static const struct nla_policy
455 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
456 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
457 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
458 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
459 };
460
461 static const struct nla_policy
462 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
463 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
464 .len = IEEE80211_MAX_SSID_LEN },
465 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
466 };
467
468 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
469 struct netlink_callback *cb,
470 struct cfg80211_registered_device **rdev,
471 struct wireless_dev **wdev)
472 {
473 int err;
474
475 rtnl_lock();
476
477 if (!cb->args[0]) {
478 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
479 nl80211_fam.attrbuf, nl80211_fam.maxattr,
480 nl80211_policy);
481 if (err)
482 goto out_unlock;
483
484 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
485 nl80211_fam.attrbuf);
486 if (IS_ERR(*wdev)) {
487 err = PTR_ERR(*wdev);
488 goto out_unlock;
489 }
490 *rdev = wiphy_to_rdev((*wdev)->wiphy);
491 /* 0 is the first index - add 1 to parse only once */
492 cb->args[0] = (*rdev)->wiphy_idx + 1;
493 cb->args[1] = (*wdev)->identifier;
494 } else {
495 /* subtract the 1 again here */
496 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
497 struct wireless_dev *tmp;
498
499 if (!wiphy) {
500 err = -ENODEV;
501 goto out_unlock;
502 }
503 *rdev = wiphy_to_rdev(wiphy);
504 *wdev = NULL;
505
506 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
507 if (tmp->identifier == cb->args[1]) {
508 *wdev = tmp;
509 break;
510 }
511 }
512
513 if (!*wdev) {
514 err = -ENODEV;
515 goto out_unlock;
516 }
517 }
518
519 return 0;
520 out_unlock:
521 rtnl_unlock();
522 return err;
523 }
524
525 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
526 {
527 rtnl_unlock();
528 }
529
530 /* IE validation */
531 static bool is_valid_ie_attr(const struct nlattr *attr)
532 {
533 const u8 *pos;
534 int len;
535
536 if (!attr)
537 return true;
538
539 pos = nla_data(attr);
540 len = nla_len(attr);
541
542 while (len) {
543 u8 elemlen;
544
545 if (len < 2)
546 return false;
547 len -= 2;
548
549 elemlen = pos[1];
550 if (elemlen > len)
551 return false;
552
553 len -= elemlen;
554 pos += 2 + elemlen;
555 }
556
557 return true;
558 }
559
560 /* message building helper */
561 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
562 int flags, u8 cmd)
563 {
564 /* since there is no private header just add the generic one */
565 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
566 }
567
568 static int nl80211_msg_put_channel(struct sk_buff *msg,
569 struct ieee80211_channel *chan,
570 bool large)
571 {
572 /* Some channels must be completely excluded from the
573 * list to protect old user-space tools from breaking
574 */
575 if (!large && chan->flags &
576 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
577 return 0;
578
579 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
580 chan->center_freq))
581 goto nla_put_failure;
582
583 if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
584 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
585 goto nla_put_failure;
586 if (chan->flags & IEEE80211_CHAN_NO_IR) {
587 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
588 goto nla_put_failure;
589 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
590 goto nla_put_failure;
591 }
592 if (chan->flags & IEEE80211_CHAN_RADAR) {
593 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
594 goto nla_put_failure;
595 if (large) {
596 u32 time;
597
598 time = elapsed_jiffies_msecs(chan->dfs_state_entered);
599
600 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
601 chan->dfs_state))
602 goto nla_put_failure;
603 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
604 time))
605 goto nla_put_failure;
606 if (nla_put_u32(msg,
607 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
608 chan->dfs_cac_ms))
609 goto nla_put_failure;
610 }
611 }
612
613 if (large) {
614 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
615 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
616 goto nla_put_failure;
617 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
618 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
619 goto nla_put_failure;
620 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
621 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
622 goto nla_put_failure;
623 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
624 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
625 goto nla_put_failure;
626 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
627 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
628 goto nla_put_failure;
629 if ((chan->flags & IEEE80211_CHAN_GO_CONCURRENT) &&
630 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_GO_CONCURRENT))
631 goto nla_put_failure;
632 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
633 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
634 goto nla_put_failure;
635 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
636 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
637 goto nla_put_failure;
638 }
639
640 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
641 DBM_TO_MBM(chan->max_power)))
642 goto nla_put_failure;
643
644 return 0;
645
646 nla_put_failure:
647 return -ENOBUFS;
648 }
649
650 /* netlink command implementations */
651
652 struct key_parse {
653 struct key_params p;
654 int idx;
655 int type;
656 bool def, defmgmt;
657 bool def_uni, def_multi;
658 };
659
660 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
661 {
662 struct nlattr *tb[NL80211_KEY_MAX + 1];
663 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
664 nl80211_key_policy);
665 if (err)
666 return err;
667
668 k->def = !!tb[NL80211_KEY_DEFAULT];
669 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
670
671 if (k->def) {
672 k->def_uni = true;
673 k->def_multi = true;
674 }
675 if (k->defmgmt)
676 k->def_multi = true;
677
678 if (tb[NL80211_KEY_IDX])
679 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
680
681 if (tb[NL80211_KEY_DATA]) {
682 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
683 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
684 }
685
686 if (tb[NL80211_KEY_SEQ]) {
687 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
688 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
689 }
690
691 if (tb[NL80211_KEY_CIPHER])
692 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
693
694 if (tb[NL80211_KEY_TYPE]) {
695 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
696 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
697 return -EINVAL;
698 }
699
700 if (tb[NL80211_KEY_DEFAULT_TYPES]) {
701 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
702 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
703 tb[NL80211_KEY_DEFAULT_TYPES],
704 nl80211_key_default_policy);
705 if (err)
706 return err;
707
708 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
709 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
710 }
711
712 return 0;
713 }
714
715 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
716 {
717 if (info->attrs[NL80211_ATTR_KEY_DATA]) {
718 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
719 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
720 }
721
722 if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
723 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
724 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
725 }
726
727 if (info->attrs[NL80211_ATTR_KEY_IDX])
728 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
729
730 if (info->attrs[NL80211_ATTR_KEY_CIPHER])
731 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
732
733 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
734 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
735
736 if (k->def) {
737 k->def_uni = true;
738 k->def_multi = true;
739 }
740 if (k->defmgmt)
741 k->def_multi = true;
742
743 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
744 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
745 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
746 return -EINVAL;
747 }
748
749 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
750 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
751 int err = nla_parse_nested(
752 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
753 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
754 nl80211_key_default_policy);
755 if (err)
756 return err;
757
758 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
759 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
760 }
761
762 return 0;
763 }
764
765 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
766 {
767 int err;
768
769 memset(k, 0, sizeof(*k));
770 k->idx = -1;
771 k->type = -1;
772
773 if (info->attrs[NL80211_ATTR_KEY])
774 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
775 else
776 err = nl80211_parse_key_old(info, k);
777
778 if (err)
779 return err;
780
781 if (k->def && k->defmgmt)
782 return -EINVAL;
783
784 if (k->defmgmt) {
785 if (k->def_uni || !k->def_multi)
786 return -EINVAL;
787 }
788
789 if (k->idx != -1) {
790 if (k->defmgmt) {
791 if (k->idx < 4 || k->idx > 5)
792 return -EINVAL;
793 } else if (k->def) {
794 if (k->idx < 0 || k->idx > 3)
795 return -EINVAL;
796 } else {
797 if (k->idx < 0 || k->idx > 5)
798 return -EINVAL;
799 }
800 }
801
802 return 0;
803 }
804
805 static struct cfg80211_cached_keys *
806 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
807 struct nlattr *keys, bool *no_ht)
808 {
809 struct key_parse parse;
810 struct nlattr *key;
811 struct cfg80211_cached_keys *result;
812 int rem, err, def = 0;
813
814 result = kzalloc(sizeof(*result), GFP_KERNEL);
815 if (!result)
816 return ERR_PTR(-ENOMEM);
817
818 result->def = -1;
819 result->defmgmt = -1;
820
821 nla_for_each_nested(key, keys, rem) {
822 memset(&parse, 0, sizeof(parse));
823 parse.idx = -1;
824
825 err = nl80211_parse_key_new(key, &parse);
826 if (err)
827 goto error;
828 err = -EINVAL;
829 if (!parse.p.key)
830 goto error;
831 if (parse.idx < 0 || parse.idx > 4)
832 goto error;
833 if (parse.def) {
834 if (def)
835 goto error;
836 def = 1;
837 result->def = parse.idx;
838 if (!parse.def_uni || !parse.def_multi)
839 goto error;
840 } else if (parse.defmgmt)
841 goto error;
842 err = cfg80211_validate_key_settings(rdev, &parse.p,
843 parse.idx, false, NULL);
844 if (err)
845 goto error;
846 result->params[parse.idx].cipher = parse.p.cipher;
847 result->params[parse.idx].key_len = parse.p.key_len;
848 result->params[parse.idx].key = result->data[parse.idx];
849 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
850
851 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
852 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
853 if (no_ht)
854 *no_ht = true;
855 }
856 }
857
858 return result;
859 error:
860 kfree(result);
861 return ERR_PTR(err);
862 }
863
864 static int nl80211_key_allowed(struct wireless_dev *wdev)
865 {
866 ASSERT_WDEV_LOCK(wdev);
867
868 switch (wdev->iftype) {
869 case NL80211_IFTYPE_AP:
870 case NL80211_IFTYPE_AP_VLAN:
871 case NL80211_IFTYPE_P2P_GO:
872 case NL80211_IFTYPE_MESH_POINT:
873 break;
874 case NL80211_IFTYPE_ADHOC:
875 case NL80211_IFTYPE_STATION:
876 case NL80211_IFTYPE_P2P_CLIENT:
877 if (!wdev->current_bss)
878 return -ENOLINK;
879 break;
880 default:
881 return -EINVAL;
882 }
883
884 return 0;
885 }
886
887 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
888 struct nlattr *tb)
889 {
890 struct ieee80211_channel *chan;
891
892 if (tb == NULL)
893 return NULL;
894 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
895 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
896 return NULL;
897 return chan;
898 }
899
900 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
901 {
902 struct nlattr *nl_modes = nla_nest_start(msg, attr);
903 int i;
904
905 if (!nl_modes)
906 goto nla_put_failure;
907
908 i = 0;
909 while (ifmodes) {
910 if ((ifmodes & 1) && nla_put_flag(msg, i))
911 goto nla_put_failure;
912 ifmodes >>= 1;
913 i++;
914 }
915
916 nla_nest_end(msg, nl_modes);
917 return 0;
918
919 nla_put_failure:
920 return -ENOBUFS;
921 }
922
923 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
924 struct sk_buff *msg,
925 bool large)
926 {
927 struct nlattr *nl_combis;
928 int i, j;
929
930 nl_combis = nla_nest_start(msg,
931 NL80211_ATTR_INTERFACE_COMBINATIONS);
932 if (!nl_combis)
933 goto nla_put_failure;
934
935 for (i = 0; i < wiphy->n_iface_combinations; i++) {
936 const struct ieee80211_iface_combination *c;
937 struct nlattr *nl_combi, *nl_limits;
938
939 c = &wiphy->iface_combinations[i];
940
941 nl_combi = nla_nest_start(msg, i + 1);
942 if (!nl_combi)
943 goto nla_put_failure;
944
945 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
946 if (!nl_limits)
947 goto nla_put_failure;
948
949 for (j = 0; j < c->n_limits; j++) {
950 struct nlattr *nl_limit;
951
952 nl_limit = nla_nest_start(msg, j + 1);
953 if (!nl_limit)
954 goto nla_put_failure;
955 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
956 c->limits[j].max))
957 goto nla_put_failure;
958 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
959 c->limits[j].types))
960 goto nla_put_failure;
961 nla_nest_end(msg, nl_limit);
962 }
963
964 nla_nest_end(msg, nl_limits);
965
966 if (c->beacon_int_infra_match &&
967 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
968 goto nla_put_failure;
969 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
970 c->num_different_channels) ||
971 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
972 c->max_interfaces))
973 goto nla_put_failure;
974 if (large &&
975 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
976 c->radar_detect_widths) ||
977 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
978 c->radar_detect_regions)))
979 goto nla_put_failure;
980
981 nla_nest_end(msg, nl_combi);
982 }
983
984 nla_nest_end(msg, nl_combis);
985
986 return 0;
987 nla_put_failure:
988 return -ENOBUFS;
989 }
990
991 #ifdef CONFIG_PM
992 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
993 struct sk_buff *msg)
994 {
995 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
996 struct nlattr *nl_tcp;
997
998 if (!tcp)
999 return 0;
1000
1001 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1002 if (!nl_tcp)
1003 return -ENOBUFS;
1004
1005 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1006 tcp->data_payload_max))
1007 return -ENOBUFS;
1008
1009 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1010 tcp->data_payload_max))
1011 return -ENOBUFS;
1012
1013 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1014 return -ENOBUFS;
1015
1016 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1017 sizeof(*tcp->tok), tcp->tok))
1018 return -ENOBUFS;
1019
1020 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1021 tcp->data_interval_max))
1022 return -ENOBUFS;
1023
1024 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1025 tcp->wake_payload_max))
1026 return -ENOBUFS;
1027
1028 nla_nest_end(msg, nl_tcp);
1029 return 0;
1030 }
1031
1032 static int nl80211_send_wowlan(struct sk_buff *msg,
1033 struct cfg80211_registered_device *rdev,
1034 bool large)
1035 {
1036 struct nlattr *nl_wowlan;
1037
1038 if (!rdev->wiphy.wowlan)
1039 return 0;
1040
1041 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1042 if (!nl_wowlan)
1043 return -ENOBUFS;
1044
1045 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1046 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1047 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1048 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1049 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1050 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1051 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1052 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1053 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1054 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1055 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1056 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1057 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1058 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1059 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1060 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1061 return -ENOBUFS;
1062
1063 if (rdev->wiphy.wowlan->n_patterns) {
1064 struct nl80211_pattern_support pat = {
1065 .max_patterns = rdev->wiphy.wowlan->n_patterns,
1066 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1067 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1068 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1069 };
1070
1071 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1072 sizeof(pat), &pat))
1073 return -ENOBUFS;
1074 }
1075
1076 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1077 return -ENOBUFS;
1078
1079 nla_nest_end(msg, nl_wowlan);
1080
1081 return 0;
1082 }
1083 #endif
1084
1085 static int nl80211_send_coalesce(struct sk_buff *msg,
1086 struct cfg80211_registered_device *rdev)
1087 {
1088 struct nl80211_coalesce_rule_support rule;
1089
1090 if (!rdev->wiphy.coalesce)
1091 return 0;
1092
1093 rule.max_rules = rdev->wiphy.coalesce->n_rules;
1094 rule.max_delay = rdev->wiphy.coalesce->max_delay;
1095 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1096 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1097 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1098 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1099
1100 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1101 return -ENOBUFS;
1102
1103 return 0;
1104 }
1105
1106 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1107 struct ieee80211_supported_band *sband)
1108 {
1109 struct nlattr *nl_rates, *nl_rate;
1110 struct ieee80211_rate *rate;
1111 int i;
1112
1113 /* add HT info */
1114 if (sband->ht_cap.ht_supported &&
1115 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1116 sizeof(sband->ht_cap.mcs),
1117 &sband->ht_cap.mcs) ||
1118 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1119 sband->ht_cap.cap) ||
1120 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1121 sband->ht_cap.ampdu_factor) ||
1122 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1123 sband->ht_cap.ampdu_density)))
1124 return -ENOBUFS;
1125
1126 /* add VHT info */
1127 if (sband->vht_cap.vht_supported &&
1128 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1129 sizeof(sband->vht_cap.vht_mcs),
1130 &sband->vht_cap.vht_mcs) ||
1131 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1132 sband->vht_cap.cap)))
1133 return -ENOBUFS;
1134
1135 /* add bitrates */
1136 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1137 if (!nl_rates)
1138 return -ENOBUFS;
1139
1140 for (i = 0; i < sband->n_bitrates; i++) {
1141 nl_rate = nla_nest_start(msg, i);
1142 if (!nl_rate)
1143 return -ENOBUFS;
1144
1145 rate = &sband->bitrates[i];
1146 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1147 rate->bitrate))
1148 return -ENOBUFS;
1149 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1150 nla_put_flag(msg,
1151 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1152 return -ENOBUFS;
1153
1154 nla_nest_end(msg, nl_rate);
1155 }
1156
1157 nla_nest_end(msg, nl_rates);
1158
1159 return 0;
1160 }
1161
1162 static int
1163 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1164 const struct ieee80211_txrx_stypes *mgmt_stypes)
1165 {
1166 u16 stypes;
1167 struct nlattr *nl_ftypes, *nl_ifs;
1168 enum nl80211_iftype ift;
1169 int i;
1170
1171 if (!mgmt_stypes)
1172 return 0;
1173
1174 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1175 if (!nl_ifs)
1176 return -ENOBUFS;
1177
1178 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1179 nl_ftypes = nla_nest_start(msg, ift);
1180 if (!nl_ftypes)
1181 return -ENOBUFS;
1182 i = 0;
1183 stypes = mgmt_stypes[ift].tx;
1184 while (stypes) {
1185 if ((stypes & 1) &&
1186 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1187 (i << 4) | IEEE80211_FTYPE_MGMT))
1188 return -ENOBUFS;
1189 stypes >>= 1;
1190 i++;
1191 }
1192 nla_nest_end(msg, nl_ftypes);
1193 }
1194
1195 nla_nest_end(msg, nl_ifs);
1196
1197 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1198 if (!nl_ifs)
1199 return -ENOBUFS;
1200
1201 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1202 nl_ftypes = nla_nest_start(msg, ift);
1203 if (!nl_ftypes)
1204 return -ENOBUFS;
1205 i = 0;
1206 stypes = mgmt_stypes[ift].rx;
1207 while (stypes) {
1208 if ((stypes & 1) &&
1209 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1210 (i << 4) | IEEE80211_FTYPE_MGMT))
1211 return -ENOBUFS;
1212 stypes >>= 1;
1213 i++;
1214 }
1215 nla_nest_end(msg, nl_ftypes);
1216 }
1217 nla_nest_end(msg, nl_ifs);
1218
1219 return 0;
1220 }
1221
1222 struct nl80211_dump_wiphy_state {
1223 s64 filter_wiphy;
1224 long start;
1225 long split_start, band_start, chan_start;
1226 bool split;
1227 };
1228
1229 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1230 enum nl80211_commands cmd,
1231 struct sk_buff *msg, u32 portid, u32 seq,
1232 int flags, struct nl80211_dump_wiphy_state *state)
1233 {
1234 void *hdr;
1235 struct nlattr *nl_bands, *nl_band;
1236 struct nlattr *nl_freqs, *nl_freq;
1237 struct nlattr *nl_cmds;
1238 enum ieee80211_band band;
1239 struct ieee80211_channel *chan;
1240 int i;
1241 const struct ieee80211_txrx_stypes *mgmt_stypes =
1242 rdev->wiphy.mgmt_stypes;
1243 u32 features;
1244
1245 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1246 if (!hdr)
1247 return -ENOBUFS;
1248
1249 if (WARN_ON(!state))
1250 return -EINVAL;
1251
1252 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1253 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1254 wiphy_name(&rdev->wiphy)) ||
1255 nla_put_u32(msg, NL80211_ATTR_GENERATION,
1256 cfg80211_rdev_list_generation))
1257 goto nla_put_failure;
1258
1259 if (cmd != NL80211_CMD_NEW_WIPHY)
1260 goto finish;
1261
1262 switch (state->split_start) {
1263 case 0:
1264 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1265 rdev->wiphy.retry_short) ||
1266 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1267 rdev->wiphy.retry_long) ||
1268 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1269 rdev->wiphy.frag_threshold) ||
1270 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1271 rdev->wiphy.rts_threshold) ||
1272 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1273 rdev->wiphy.coverage_class) ||
1274 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1275 rdev->wiphy.max_scan_ssids) ||
1276 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1277 rdev->wiphy.max_sched_scan_ssids) ||
1278 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1279 rdev->wiphy.max_scan_ie_len) ||
1280 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1281 rdev->wiphy.max_sched_scan_ie_len) ||
1282 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1283 rdev->wiphy.max_match_sets))
1284 goto nla_put_failure;
1285
1286 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1287 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1288 goto nla_put_failure;
1289 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1290 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1291 goto nla_put_failure;
1292 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1293 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1294 goto nla_put_failure;
1295 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1296 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1297 goto nla_put_failure;
1298 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1299 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1300 goto nla_put_failure;
1301 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1302 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1303 goto nla_put_failure;
1304 state->split_start++;
1305 if (state->split)
1306 break;
1307 case 1:
1308 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1309 sizeof(u32) * rdev->wiphy.n_cipher_suites,
1310 rdev->wiphy.cipher_suites))
1311 goto nla_put_failure;
1312
1313 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1314 rdev->wiphy.max_num_pmkids))
1315 goto nla_put_failure;
1316
1317 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1318 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1319 goto nla_put_failure;
1320
1321 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1322 rdev->wiphy.available_antennas_tx) ||
1323 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1324 rdev->wiphy.available_antennas_rx))
1325 goto nla_put_failure;
1326
1327 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1328 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1329 rdev->wiphy.probe_resp_offload))
1330 goto nla_put_failure;
1331
1332 if ((rdev->wiphy.available_antennas_tx ||
1333 rdev->wiphy.available_antennas_rx) &&
1334 rdev->ops->get_antenna) {
1335 u32 tx_ant = 0, rx_ant = 0;
1336 int res;
1337 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1338 if (!res) {
1339 if (nla_put_u32(msg,
1340 NL80211_ATTR_WIPHY_ANTENNA_TX,
1341 tx_ant) ||
1342 nla_put_u32(msg,
1343 NL80211_ATTR_WIPHY_ANTENNA_RX,
1344 rx_ant))
1345 goto nla_put_failure;
1346 }
1347 }
1348
1349 state->split_start++;
1350 if (state->split)
1351 break;
1352 case 2:
1353 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1354 rdev->wiphy.interface_modes))
1355 goto nla_put_failure;
1356 state->split_start++;
1357 if (state->split)
1358 break;
1359 case 3:
1360 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1361 if (!nl_bands)
1362 goto nla_put_failure;
1363
1364 for (band = state->band_start;
1365 band < IEEE80211_NUM_BANDS; band++) {
1366 struct ieee80211_supported_band *sband;
1367
1368 sband = rdev->wiphy.bands[band];
1369
1370 if (!sband)
1371 continue;
1372
1373 nl_band = nla_nest_start(msg, band);
1374 if (!nl_band)
1375 goto nla_put_failure;
1376
1377 switch (state->chan_start) {
1378 case 0:
1379 if (nl80211_send_band_rateinfo(msg, sband))
1380 goto nla_put_failure;
1381 state->chan_start++;
1382 if (state->split)
1383 break;
1384 default:
1385 /* add frequencies */
1386 nl_freqs = nla_nest_start(
1387 msg, NL80211_BAND_ATTR_FREQS);
1388 if (!nl_freqs)
1389 goto nla_put_failure;
1390
1391 for (i = state->chan_start - 1;
1392 i < sband->n_channels;
1393 i++) {
1394 nl_freq = nla_nest_start(msg, i);
1395 if (!nl_freq)
1396 goto nla_put_failure;
1397
1398 chan = &sband->channels[i];
1399
1400 if (nl80211_msg_put_channel(
1401 msg, chan,
1402 state->split))
1403 goto nla_put_failure;
1404
1405 nla_nest_end(msg, nl_freq);
1406 if (state->split)
1407 break;
1408 }
1409 if (i < sband->n_channels)
1410 state->chan_start = i + 2;
1411 else
1412 state->chan_start = 0;
1413 nla_nest_end(msg, nl_freqs);
1414 }
1415
1416 nla_nest_end(msg, nl_band);
1417
1418 if (state->split) {
1419 /* start again here */
1420 if (state->chan_start)
1421 band--;
1422 break;
1423 }
1424 }
1425 nla_nest_end(msg, nl_bands);
1426
1427 if (band < IEEE80211_NUM_BANDS)
1428 state->band_start = band + 1;
1429 else
1430 state->band_start = 0;
1431
1432 /* if bands & channels are done, continue outside */
1433 if (state->band_start == 0 && state->chan_start == 0)
1434 state->split_start++;
1435 if (state->split)
1436 break;
1437 case 4:
1438 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1439 if (!nl_cmds)
1440 goto nla_put_failure;
1441
1442 i = 0;
1443 #define CMD(op, n) \
1444 do { \
1445 if (rdev->ops->op) { \
1446 i++; \
1447 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1448 goto nla_put_failure; \
1449 } \
1450 } while (0)
1451
1452 CMD(add_virtual_intf, NEW_INTERFACE);
1453 CMD(change_virtual_intf, SET_INTERFACE);
1454 CMD(add_key, NEW_KEY);
1455 CMD(start_ap, START_AP);
1456 CMD(add_station, NEW_STATION);
1457 CMD(add_mpath, NEW_MPATH);
1458 CMD(update_mesh_config, SET_MESH_CONFIG);
1459 CMD(change_bss, SET_BSS);
1460 CMD(auth, AUTHENTICATE);
1461 CMD(assoc, ASSOCIATE);
1462 CMD(deauth, DEAUTHENTICATE);
1463 CMD(disassoc, DISASSOCIATE);
1464 CMD(join_ibss, JOIN_IBSS);
1465 CMD(join_mesh, JOIN_MESH);
1466 CMD(set_pmksa, SET_PMKSA);
1467 CMD(del_pmksa, DEL_PMKSA);
1468 CMD(flush_pmksa, FLUSH_PMKSA);
1469 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1470 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1471 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1472 CMD(mgmt_tx, FRAME);
1473 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1474 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1475 i++;
1476 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1477 goto nla_put_failure;
1478 }
1479 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1480 rdev->ops->join_mesh) {
1481 i++;
1482 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1483 goto nla_put_failure;
1484 }
1485 CMD(set_wds_peer, SET_WDS_PEER);
1486 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1487 CMD(tdls_mgmt, TDLS_MGMT);
1488 CMD(tdls_oper, TDLS_OPER);
1489 }
1490 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1491 CMD(sched_scan_start, START_SCHED_SCAN);
1492 CMD(probe_client, PROBE_CLIENT);
1493 CMD(set_noack_map, SET_NOACK_MAP);
1494 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1495 i++;
1496 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1497 goto nla_put_failure;
1498 }
1499 CMD(start_p2p_device, START_P2P_DEVICE);
1500 CMD(set_mcast_rate, SET_MCAST_RATE);
1501 #ifdef CONFIG_NL80211_TESTMODE
1502 CMD(testmode_cmd, TESTMODE);
1503 #endif
1504 if (state->split) {
1505 CMD(crit_proto_start, CRIT_PROTOCOL_START);
1506 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1507 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1508 CMD(channel_switch, CHANNEL_SWITCH);
1509 CMD(set_qos_map, SET_QOS_MAP);
1510 }
1511 /* add into the if now */
1512 #undef CMD
1513
1514 if (rdev->ops->connect || rdev->ops->auth) {
1515 i++;
1516 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1517 goto nla_put_failure;
1518 }
1519
1520 if (rdev->ops->disconnect || rdev->ops->deauth) {
1521 i++;
1522 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1523 goto nla_put_failure;
1524 }
1525
1526 nla_nest_end(msg, nl_cmds);
1527 state->split_start++;
1528 if (state->split)
1529 break;
1530 case 5:
1531 if (rdev->ops->remain_on_channel &&
1532 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1533 nla_put_u32(msg,
1534 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1535 rdev->wiphy.max_remain_on_channel_duration))
1536 goto nla_put_failure;
1537
1538 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1539 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1540 goto nla_put_failure;
1541
1542 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1543 goto nla_put_failure;
1544 state->split_start++;
1545 if (state->split)
1546 break;
1547 case 6:
1548 #ifdef CONFIG_PM
1549 if (nl80211_send_wowlan(msg, rdev, state->split))
1550 goto nla_put_failure;
1551 state->split_start++;
1552 if (state->split)
1553 break;
1554 #else
1555 state->split_start++;
1556 #endif
1557 case 7:
1558 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1559 rdev->wiphy.software_iftypes))
1560 goto nla_put_failure;
1561
1562 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1563 state->split))
1564 goto nla_put_failure;
1565
1566 state->split_start++;
1567 if (state->split)
1568 break;
1569 case 8:
1570 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1571 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1572 rdev->wiphy.ap_sme_capa))
1573 goto nla_put_failure;
1574
1575 features = rdev->wiphy.features;
1576 /*
1577 * We can only add the per-channel limit information if the
1578 * dump is split, otherwise it makes it too big. Therefore
1579 * only advertise it in that case.
1580 */
1581 if (state->split)
1582 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1583 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1584 goto nla_put_failure;
1585
1586 if (rdev->wiphy.ht_capa_mod_mask &&
1587 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1588 sizeof(*rdev->wiphy.ht_capa_mod_mask),
1589 rdev->wiphy.ht_capa_mod_mask))
1590 goto nla_put_failure;
1591
1592 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1593 rdev->wiphy.max_acl_mac_addrs &&
1594 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1595 rdev->wiphy.max_acl_mac_addrs))
1596 goto nla_put_failure;
1597
1598 /*
1599 * Any information below this point is only available to
1600 * applications that can deal with it being split. This
1601 * helps ensure that newly added capabilities don't break
1602 * older tools by overrunning their buffers.
1603 *
1604 * We still increment split_start so that in the split
1605 * case we'll continue with more data in the next round,
1606 * but break unconditionally so unsplit data stops here.
1607 */
1608 state->split_start++;
1609 break;
1610 case 9:
1611 if (rdev->wiphy.extended_capabilities &&
1612 (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1613 rdev->wiphy.extended_capabilities_len,
1614 rdev->wiphy.extended_capabilities) ||
1615 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1616 rdev->wiphy.extended_capabilities_len,
1617 rdev->wiphy.extended_capabilities_mask)))
1618 goto nla_put_failure;
1619
1620 if (rdev->wiphy.vht_capa_mod_mask &&
1621 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1622 sizeof(*rdev->wiphy.vht_capa_mod_mask),
1623 rdev->wiphy.vht_capa_mod_mask))
1624 goto nla_put_failure;
1625
1626 state->split_start++;
1627 break;
1628 case 10:
1629 if (nl80211_send_coalesce(msg, rdev))
1630 goto nla_put_failure;
1631
1632 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1633 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1634 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1635 goto nla_put_failure;
1636
1637 if (rdev->wiphy.max_ap_assoc_sta &&
1638 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1639 rdev->wiphy.max_ap_assoc_sta))
1640 goto nla_put_failure;
1641
1642 state->split_start++;
1643 break;
1644 case 11:
1645 if (rdev->wiphy.n_vendor_commands) {
1646 const struct nl80211_vendor_cmd_info *info;
1647 struct nlattr *nested;
1648
1649 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1650 if (!nested)
1651 goto nla_put_failure;
1652
1653 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1654 info = &rdev->wiphy.vendor_commands[i].info;
1655 if (nla_put(msg, i + 1, sizeof(*info), info))
1656 goto nla_put_failure;
1657 }
1658 nla_nest_end(msg, nested);
1659 }
1660
1661 if (rdev->wiphy.n_vendor_events) {
1662 const struct nl80211_vendor_cmd_info *info;
1663 struct nlattr *nested;
1664
1665 nested = nla_nest_start(msg,
1666 NL80211_ATTR_VENDOR_EVENTS);
1667 if (!nested)
1668 goto nla_put_failure;
1669
1670 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1671 info = &rdev->wiphy.vendor_events[i];
1672 if (nla_put(msg, i + 1, sizeof(*info), info))
1673 goto nla_put_failure;
1674 }
1675 nla_nest_end(msg, nested);
1676 }
1677 state->split_start++;
1678 break;
1679 case 12:
1680 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1681 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1682 rdev->wiphy.max_num_csa_counters))
1683 goto nla_put_failure;
1684
1685 /* done */
1686 state->split_start = 0;
1687 break;
1688 }
1689 finish:
1690 return genlmsg_end(msg, hdr);
1691
1692 nla_put_failure:
1693 genlmsg_cancel(msg, hdr);
1694 return -EMSGSIZE;
1695 }
1696
1697 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1698 struct netlink_callback *cb,
1699 struct nl80211_dump_wiphy_state *state)
1700 {
1701 struct nlattr **tb = nl80211_fam.attrbuf;
1702 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1703 tb, nl80211_fam.maxattr, nl80211_policy);
1704 /* ignore parse errors for backward compatibility */
1705 if (ret)
1706 return 0;
1707
1708 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1709 if (tb[NL80211_ATTR_WIPHY])
1710 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1711 if (tb[NL80211_ATTR_WDEV])
1712 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1713 if (tb[NL80211_ATTR_IFINDEX]) {
1714 struct net_device *netdev;
1715 struct cfg80211_registered_device *rdev;
1716 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1717
1718 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1719 if (!netdev)
1720 return -ENODEV;
1721 if (netdev->ieee80211_ptr) {
1722 rdev = wiphy_to_rdev(
1723 netdev->ieee80211_ptr->wiphy);
1724 state->filter_wiphy = rdev->wiphy_idx;
1725 }
1726 }
1727
1728 return 0;
1729 }
1730
1731 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1732 {
1733 int idx = 0, ret;
1734 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1735 struct cfg80211_registered_device *rdev;
1736
1737 rtnl_lock();
1738 if (!state) {
1739 state = kzalloc(sizeof(*state), GFP_KERNEL);
1740 if (!state) {
1741 rtnl_unlock();
1742 return -ENOMEM;
1743 }
1744 state->filter_wiphy = -1;
1745 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1746 if (ret) {
1747 kfree(state);
1748 rtnl_unlock();
1749 return ret;
1750 }
1751 cb->args[0] = (long)state;
1752 }
1753
1754 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1755 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1756 continue;
1757 if (++idx <= state->start)
1758 continue;
1759 if (state->filter_wiphy != -1 &&
1760 state->filter_wiphy != rdev->wiphy_idx)
1761 continue;
1762 /* attempt to fit multiple wiphy data chunks into the skb */
1763 do {
1764 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1765 skb,
1766 NETLINK_CB(cb->skb).portid,
1767 cb->nlh->nlmsg_seq,
1768 NLM_F_MULTI, state);
1769 if (ret < 0) {
1770 /*
1771 * If sending the wiphy data didn't fit (ENOBUFS
1772 * or EMSGSIZE returned), this SKB is still
1773 * empty (so it's not too big because another
1774 * wiphy dataset is already in the skb) and
1775 * we've not tried to adjust the dump allocation
1776 * yet ... then adjust the alloc size to be
1777 * bigger, and return 1 but with the empty skb.
1778 * This results in an empty message being RX'ed
1779 * in userspace, but that is ignored.
1780 *
1781 * We can then retry with the larger buffer.
1782 */
1783 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1784 !skb->len && !state->split &&
1785 cb->min_dump_alloc < 4096) {
1786 cb->min_dump_alloc = 4096;
1787 state->split_start = 0;
1788 rtnl_unlock();
1789 return 1;
1790 }
1791 idx--;
1792 break;
1793 }
1794 } while (state->split_start > 0);
1795 break;
1796 }
1797 rtnl_unlock();
1798
1799 state->start = idx;
1800
1801 return skb->len;
1802 }
1803
1804 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1805 {
1806 kfree((void *)cb->args[0]);
1807 return 0;
1808 }
1809
1810 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1811 {
1812 struct sk_buff *msg;
1813 struct cfg80211_registered_device *rdev = info->user_ptr[0];
1814 struct nl80211_dump_wiphy_state state = {};
1815
1816 msg = nlmsg_new(4096, GFP_KERNEL);
1817 if (!msg)
1818 return -ENOMEM;
1819
1820 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1821 info->snd_portid, info->snd_seq, 0,
1822 &state) < 0) {
1823 nlmsg_free(msg);
1824 return -ENOBUFS;
1825 }
1826
1827 return genlmsg_reply(msg, info);
1828 }
1829
1830 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1831 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 },
1832 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 },
1833 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 },
1834 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 },
1835 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 },
1836 };
1837
1838 static int parse_txq_params(struct nlattr *tb[],
1839 struct ieee80211_txq_params *txq_params)
1840 {
1841 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1842 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1843 !tb[NL80211_TXQ_ATTR_AIFS])
1844 return -EINVAL;
1845
1846 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1847 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1848 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1849 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1850 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1851
1852 if (txq_params->ac >= NL80211_NUM_ACS)
1853 return -EINVAL;
1854
1855 return 0;
1856 }
1857
1858 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1859 {
1860 /*
1861 * You can only set the channel explicitly for WDS interfaces,
1862 * all others have their channel managed via their respective
1863 * "establish a connection" command (connect, join, ...)
1864 *
1865 * For AP/GO and mesh mode, the channel can be set with the
1866 * channel userspace API, but is only stored and passed to the
1867 * low-level driver when the AP starts or the mesh is joined.
1868 * This is for backward compatibility, userspace can also give
1869 * the channel in the start-ap or join-mesh commands instead.
1870 *
1871 * Monitors are special as they are normally slaved to
1872 * whatever else is going on, so they have their own special
1873 * operation to set the monitor channel if possible.
1874 */
1875 return !wdev ||
1876 wdev->iftype == NL80211_IFTYPE_AP ||
1877 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1878 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1879 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1880 }
1881
1882 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1883 struct genl_info *info,
1884 struct cfg80211_chan_def *chandef)
1885 {
1886 u32 control_freq;
1887
1888 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1889 return -EINVAL;
1890
1891 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1892
1893 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1894 chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1895 chandef->center_freq1 = control_freq;
1896 chandef->center_freq2 = 0;
1897
1898 /* Primary channel not allowed */
1899 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1900 return -EINVAL;
1901
1902 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1903 enum nl80211_channel_type chantype;
1904
1905 chantype = nla_get_u32(
1906 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1907
1908 switch (chantype) {
1909 case NL80211_CHAN_NO_HT:
1910 case NL80211_CHAN_HT20:
1911 case NL80211_CHAN_HT40PLUS:
1912 case NL80211_CHAN_HT40MINUS:
1913 cfg80211_chandef_create(chandef, chandef->chan,
1914 chantype);
1915 break;
1916 default:
1917 return -EINVAL;
1918 }
1919 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1920 chandef->width =
1921 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1922 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1923 chandef->center_freq1 =
1924 nla_get_u32(
1925 info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1926 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1927 chandef->center_freq2 =
1928 nla_get_u32(
1929 info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1930 }
1931
1932 if (!cfg80211_chandef_valid(chandef))
1933 return -EINVAL;
1934
1935 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1936 IEEE80211_CHAN_DISABLED))
1937 return -EINVAL;
1938
1939 if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1940 chandef->width == NL80211_CHAN_WIDTH_10) &&
1941 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1942 return -EINVAL;
1943
1944 return 0;
1945 }
1946
1947 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1948 struct net_device *dev,
1949 struct genl_info *info)
1950 {
1951 struct cfg80211_chan_def chandef;
1952 int result;
1953 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1954 struct wireless_dev *wdev = NULL;
1955
1956 if (dev)
1957 wdev = dev->ieee80211_ptr;
1958 if (!nl80211_can_set_dev_channel(wdev))
1959 return -EOPNOTSUPP;
1960 if (wdev)
1961 iftype = wdev->iftype;
1962
1963 result = nl80211_parse_chandef(rdev, info, &chandef);
1964 if (result)
1965 return result;
1966
1967 switch (iftype) {
1968 case NL80211_IFTYPE_AP:
1969 case NL80211_IFTYPE_P2P_GO:
1970 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, iftype)) {
1971 result = -EINVAL;
1972 break;
1973 }
1974 if (wdev->beacon_interval) {
1975 if (!dev || !rdev->ops->set_ap_chanwidth ||
1976 !(rdev->wiphy.features &
1977 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
1978 result = -EBUSY;
1979 break;
1980 }
1981
1982 /* Only allow dynamic channel width changes */
1983 if (chandef.chan != wdev->preset_chandef.chan) {
1984 result = -EBUSY;
1985 break;
1986 }
1987 result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
1988 if (result)
1989 break;
1990 }
1991 wdev->preset_chandef = chandef;
1992 result = 0;
1993 break;
1994 case NL80211_IFTYPE_MESH_POINT:
1995 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
1996 break;
1997 case NL80211_IFTYPE_MONITOR:
1998 result = cfg80211_set_monitor_channel(rdev, &chandef);
1999 break;
2000 default:
2001 result = -EINVAL;
2002 }
2003
2004 return result;
2005 }
2006
2007 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2008 {
2009 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2010 struct net_device *netdev = info->user_ptr[1];
2011
2012 return __nl80211_set_channel(rdev, netdev, info);
2013 }
2014
2015 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2016 {
2017 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2018 struct net_device *dev = info->user_ptr[1];
2019 struct wireless_dev *wdev = dev->ieee80211_ptr;
2020 const u8 *bssid;
2021
2022 if (!info->attrs[NL80211_ATTR_MAC])
2023 return -EINVAL;
2024
2025 if (netif_running(dev))
2026 return -EBUSY;
2027
2028 if (!rdev->ops->set_wds_peer)
2029 return -EOPNOTSUPP;
2030
2031 if (wdev->iftype != NL80211_IFTYPE_WDS)
2032 return -EOPNOTSUPP;
2033
2034 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2035 return rdev_set_wds_peer(rdev, dev, bssid);
2036 }
2037
2038
2039 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2040 {
2041 struct cfg80211_registered_device *rdev;
2042 struct net_device *netdev = NULL;
2043 struct wireless_dev *wdev;
2044 int result = 0, rem_txq_params = 0;
2045 struct nlattr *nl_txq_params;
2046 u32 changed;
2047 u8 retry_short = 0, retry_long = 0;
2048 u32 frag_threshold = 0, rts_threshold = 0;
2049 u8 coverage_class = 0;
2050
2051 ASSERT_RTNL();
2052
2053 /*
2054 * Try to find the wiphy and netdev. Normally this
2055 * function shouldn't need the netdev, but this is
2056 * done for backward compatibility -- previously
2057 * setting the channel was done per wiphy, but now
2058 * it is per netdev. Previous userland like hostapd
2059 * also passed a netdev to set_wiphy, so that it is
2060 * possible to let that go to the right netdev!
2061 */
2062
2063 if (info->attrs[NL80211_ATTR_IFINDEX]) {
2064 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2065
2066 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2067 if (netdev && netdev->ieee80211_ptr)
2068 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2069 else
2070 netdev = NULL;
2071 }
2072
2073 if (!netdev) {
2074 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2075 info->attrs);
2076 if (IS_ERR(rdev))
2077 return PTR_ERR(rdev);
2078 wdev = NULL;
2079 netdev = NULL;
2080 result = 0;
2081 } else
2082 wdev = netdev->ieee80211_ptr;
2083
2084 /*
2085 * end workaround code, by now the rdev is available
2086 * and locked, and wdev may or may not be NULL.
2087 */
2088
2089 if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2090 result = cfg80211_dev_rename(
2091 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2092
2093 if (result)
2094 return result;
2095
2096 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2097 struct ieee80211_txq_params txq_params;
2098 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2099
2100 if (!rdev->ops->set_txq_params)
2101 return -EOPNOTSUPP;
2102
2103 if (!netdev)
2104 return -EINVAL;
2105
2106 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2107 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2108 return -EINVAL;
2109
2110 if (!netif_running(netdev))
2111 return -ENETDOWN;
2112
2113 nla_for_each_nested(nl_txq_params,
2114 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2115 rem_txq_params) {
2116 result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2117 nla_data(nl_txq_params),
2118 nla_len(nl_txq_params),
2119 txq_params_policy);
2120 if (result)
2121 return result;
2122 result = parse_txq_params(tb, &txq_params);
2123 if (result)
2124 return result;
2125
2126 result = rdev_set_txq_params(rdev, netdev,
2127 &txq_params);
2128 if (result)
2129 return result;
2130 }
2131 }
2132
2133 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2134 result = __nl80211_set_channel(
2135 rdev,
2136 nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2137 info);
2138 if (result)
2139 return result;
2140 }
2141
2142 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2143 struct wireless_dev *txp_wdev = wdev;
2144 enum nl80211_tx_power_setting type;
2145 int idx, mbm = 0;
2146
2147 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2148 txp_wdev = NULL;
2149
2150 if (!rdev->ops->set_tx_power)
2151 return -EOPNOTSUPP;
2152
2153 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2154 type = nla_get_u32(info->attrs[idx]);
2155
2156 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2157 (type != NL80211_TX_POWER_AUTOMATIC))
2158 return -EINVAL;
2159
2160 if (type != NL80211_TX_POWER_AUTOMATIC) {
2161 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2162 mbm = nla_get_u32(info->attrs[idx]);
2163 }
2164
2165 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2166 if (result)
2167 return result;
2168 }
2169
2170 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2171 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2172 u32 tx_ant, rx_ant;
2173 if ((!rdev->wiphy.available_antennas_tx &&
2174 !rdev->wiphy.available_antennas_rx) ||
2175 !rdev->ops->set_antenna)
2176 return -EOPNOTSUPP;
2177
2178 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2179 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2180
2181 /* reject antenna configurations which don't match the
2182 * available antenna masks, except for the "all" mask */
2183 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2184 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2185 return -EINVAL;
2186
2187 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2188 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2189
2190 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2191 if (result)
2192 return result;
2193 }
2194
2195 changed = 0;
2196
2197 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2198 retry_short = nla_get_u8(
2199 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2200 if (retry_short == 0)
2201 return -EINVAL;
2202
2203 changed |= WIPHY_PARAM_RETRY_SHORT;
2204 }
2205
2206 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2207 retry_long = nla_get_u8(
2208 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2209 if (retry_long == 0)
2210 return -EINVAL;
2211
2212 changed |= WIPHY_PARAM_RETRY_LONG;
2213 }
2214
2215 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2216 frag_threshold = nla_get_u32(
2217 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2218 if (frag_threshold < 256)
2219 return -EINVAL;
2220
2221 if (frag_threshold != (u32) -1) {
2222 /*
2223 * Fragments (apart from the last one) are required to
2224 * have even length. Make the fragmentation code
2225 * simpler by stripping LSB should someone try to use
2226 * odd threshold value.
2227 */
2228 frag_threshold &= ~0x1;
2229 }
2230 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2231 }
2232
2233 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2234 rts_threshold = nla_get_u32(
2235 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2236 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2237 }
2238
2239 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2240 coverage_class = nla_get_u8(
2241 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2242 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2243 }
2244
2245 if (changed) {
2246 u8 old_retry_short, old_retry_long;
2247 u32 old_frag_threshold, old_rts_threshold;
2248 u8 old_coverage_class;
2249
2250 if (!rdev->ops->set_wiphy_params)
2251 return -EOPNOTSUPP;
2252
2253 old_retry_short = rdev->wiphy.retry_short;
2254 old_retry_long = rdev->wiphy.retry_long;
2255 old_frag_threshold = rdev->wiphy.frag_threshold;
2256 old_rts_threshold = rdev->wiphy.rts_threshold;
2257 old_coverage_class = rdev->wiphy.coverage_class;
2258
2259 if (changed & WIPHY_PARAM_RETRY_SHORT)
2260 rdev->wiphy.retry_short = retry_short;
2261 if (changed & WIPHY_PARAM_RETRY_LONG)
2262 rdev->wiphy.retry_long = retry_long;
2263 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2264 rdev->wiphy.frag_threshold = frag_threshold;
2265 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2266 rdev->wiphy.rts_threshold = rts_threshold;
2267 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2268 rdev->wiphy.coverage_class = coverage_class;
2269
2270 result = rdev_set_wiphy_params(rdev, changed);
2271 if (result) {
2272 rdev->wiphy.retry_short = old_retry_short;
2273 rdev->wiphy.retry_long = old_retry_long;
2274 rdev->wiphy.frag_threshold = old_frag_threshold;
2275 rdev->wiphy.rts_threshold = old_rts_threshold;
2276 rdev->wiphy.coverage_class = old_coverage_class;
2277 }
2278 }
2279 return 0;
2280 }
2281
2282 static inline u64 wdev_id(struct wireless_dev *wdev)
2283 {
2284 return (u64)wdev->identifier |
2285 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2286 }
2287
2288 static int nl80211_send_chandef(struct sk_buff *msg,
2289 const struct cfg80211_chan_def *chandef)
2290 {
2291 WARN_ON(!cfg80211_chandef_valid(chandef));
2292
2293 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2294 chandef->chan->center_freq))
2295 return -ENOBUFS;
2296 switch (chandef->width) {
2297 case NL80211_CHAN_WIDTH_20_NOHT:
2298 case NL80211_CHAN_WIDTH_20:
2299 case NL80211_CHAN_WIDTH_40:
2300 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2301 cfg80211_get_chandef_type(chandef)))
2302 return -ENOBUFS;
2303 break;
2304 default:
2305 break;
2306 }
2307 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2308 return -ENOBUFS;
2309 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2310 return -ENOBUFS;
2311 if (chandef->center_freq2 &&
2312 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2313 return -ENOBUFS;
2314 return 0;
2315 }
2316
2317 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2318 struct cfg80211_registered_device *rdev,
2319 struct wireless_dev *wdev)
2320 {
2321 struct net_device *dev = wdev->netdev;
2322 void *hdr;
2323
2324 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
2325 if (!hdr)
2326 return -1;
2327
2328 if (dev &&
2329 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2330 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2331 goto nla_put_failure;
2332
2333 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2334 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2335 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2336 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2337 nla_put_u32(msg, NL80211_ATTR_GENERATION,
2338 rdev->devlist_generation ^
2339 (cfg80211_rdev_list_generation << 2)))
2340 goto nla_put_failure;
2341
2342 if (rdev->ops->get_channel) {
2343 int ret;
2344 struct cfg80211_chan_def chandef;
2345
2346 ret = rdev_get_channel(rdev, wdev, &chandef);
2347 if (ret == 0) {
2348 if (nl80211_send_chandef(msg, &chandef))
2349 goto nla_put_failure;
2350 }
2351 }
2352
2353 if (wdev->ssid_len) {
2354 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2355 goto nla_put_failure;
2356 }
2357
2358 return genlmsg_end(msg, hdr);
2359
2360 nla_put_failure:
2361 genlmsg_cancel(msg, hdr);
2362 return -EMSGSIZE;
2363 }
2364
2365 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2366 {
2367 int wp_idx = 0;
2368 int if_idx = 0;
2369 int wp_start = cb->args[0];
2370 int if_start = cb->args[1];
2371 struct cfg80211_registered_device *rdev;
2372 struct wireless_dev *wdev;
2373
2374 rtnl_lock();
2375 list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2376 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2377 continue;
2378 if (wp_idx < wp_start) {
2379 wp_idx++;
2380 continue;
2381 }
2382 if_idx = 0;
2383
2384 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2385 if (if_idx < if_start) {
2386 if_idx++;
2387 continue;
2388 }
2389 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2390 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2391 rdev, wdev) < 0) {
2392 goto out;
2393 }
2394 if_idx++;
2395 }
2396
2397 wp_idx++;
2398 }
2399 out:
2400 rtnl_unlock();
2401
2402 cb->args[0] = wp_idx;
2403 cb->args[1] = if_idx;
2404
2405 return skb->len;
2406 }
2407
2408 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2409 {
2410 struct sk_buff *msg;
2411 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2412 struct wireless_dev *wdev = info->user_ptr[1];
2413
2414 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2415 if (!msg)
2416 return -ENOMEM;
2417
2418 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2419 rdev, wdev) < 0) {
2420 nlmsg_free(msg);
2421 return -ENOBUFS;
2422 }
2423
2424 return genlmsg_reply(msg, info);
2425 }
2426
2427 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2428 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2429 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2430 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2431 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2432 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2433 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2434 };
2435
2436 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2437 {
2438 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2439 int flag;
2440
2441 *mntrflags = 0;
2442
2443 if (!nla)
2444 return -EINVAL;
2445
2446 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2447 nla, mntr_flags_policy))
2448 return -EINVAL;
2449
2450 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2451 if (flags[flag])
2452 *mntrflags |= (1<<flag);
2453
2454 return 0;
2455 }
2456
2457 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2458 struct net_device *netdev, u8 use_4addr,
2459 enum nl80211_iftype iftype)
2460 {
2461 if (!use_4addr) {
2462 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2463 return -EBUSY;
2464 return 0;
2465 }
2466
2467 switch (iftype) {
2468 case NL80211_IFTYPE_AP_VLAN:
2469 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2470 return 0;
2471 break;
2472 case NL80211_IFTYPE_STATION:
2473 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2474 return 0;
2475 break;
2476 default:
2477 break;
2478 }
2479
2480 return -EOPNOTSUPP;
2481 }
2482
2483 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2484 {
2485 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2486 struct vif_params params;
2487 int err;
2488 enum nl80211_iftype otype, ntype;
2489 struct net_device *dev = info->user_ptr[1];
2490 u32 _flags, *flags = NULL;
2491 bool change = false;
2492
2493 memset(&params, 0, sizeof(params));
2494
2495 otype = ntype = dev->ieee80211_ptr->iftype;
2496
2497 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2498 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2499 if (otype != ntype)
2500 change = true;
2501 if (ntype > NL80211_IFTYPE_MAX)
2502 return -EINVAL;
2503 }
2504
2505 if (info->attrs[NL80211_ATTR_MESH_ID]) {
2506 struct wireless_dev *wdev = dev->ieee80211_ptr;
2507
2508 if (ntype != NL80211_IFTYPE_MESH_POINT)
2509 return -EINVAL;
2510 if (netif_running(dev))
2511 return -EBUSY;
2512
2513 wdev_lock(wdev);
2514 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2515 IEEE80211_MAX_MESH_ID_LEN);
2516 wdev->mesh_id_up_len =
2517 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2518 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2519 wdev->mesh_id_up_len);
2520 wdev_unlock(wdev);
2521 }
2522
2523 if (info->attrs[NL80211_ATTR_4ADDR]) {
2524 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2525 change = true;
2526 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2527 if (err)
2528 return err;
2529 } else {
2530 params.use_4addr = -1;
2531 }
2532
2533 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2534 if (ntype != NL80211_IFTYPE_MONITOR)
2535 return -EINVAL;
2536 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2537 &_flags);
2538 if (err)
2539 return err;
2540
2541 flags = &_flags;
2542 change = true;
2543 }
2544
2545 if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2546 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2547 return -EOPNOTSUPP;
2548
2549 if (change)
2550 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2551 else
2552 err = 0;
2553
2554 if (!err && params.use_4addr != -1)
2555 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2556
2557 return err;
2558 }
2559
2560 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2561 {
2562 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2563 struct vif_params params;
2564 struct wireless_dev *wdev;
2565 struct sk_buff *msg;
2566 int err;
2567 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2568 u32 flags;
2569
2570 /* to avoid failing a new interface creation due to pending removal */
2571 cfg80211_destroy_ifaces(rdev);
2572
2573 memset(&params, 0, sizeof(params));
2574
2575 if (!info->attrs[NL80211_ATTR_IFNAME])
2576 return -EINVAL;
2577
2578 if (info->attrs[NL80211_ATTR_IFTYPE]) {
2579 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2580 if (type > NL80211_IFTYPE_MAX)
2581 return -EINVAL;
2582 }
2583
2584 if (!rdev->ops->add_virtual_intf ||
2585 !(rdev->wiphy.interface_modes & (1 << type)))
2586 return -EOPNOTSUPP;
2587
2588 if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) {
2589 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2590 ETH_ALEN);
2591 if (!is_valid_ether_addr(params.macaddr))
2592 return -EADDRNOTAVAIL;
2593 }
2594
2595 if (info->attrs[NL80211_ATTR_4ADDR]) {
2596 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2597 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2598 if (err)
2599 return err;
2600 }
2601
2602 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2603 if (!msg)
2604 return -ENOMEM;
2605
2606 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2607 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2608 &flags);
2609
2610 if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2611 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2612 return -EOPNOTSUPP;
2613
2614 wdev = rdev_add_virtual_intf(rdev,
2615 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2616 type, err ? NULL : &flags, &params);
2617 if (IS_ERR(wdev)) {
2618 nlmsg_free(msg);
2619 return PTR_ERR(wdev);
2620 }
2621
2622 if (info->attrs[NL80211_ATTR_IFACE_SOCKET_OWNER])
2623 wdev->owner_nlportid = info->snd_portid;
2624
2625 switch (type) {
2626 case NL80211_IFTYPE_MESH_POINT:
2627 if (!info->attrs[NL80211_ATTR_MESH_ID])
2628 break;
2629 wdev_lock(wdev);
2630 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2631 IEEE80211_MAX_MESH_ID_LEN);
2632 wdev->mesh_id_up_len =
2633 nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2634 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2635 wdev->mesh_id_up_len);
2636 wdev_unlock(wdev);
2637 break;
2638 case NL80211_IFTYPE_P2P_DEVICE:
2639 /*
2640 * P2P Device doesn't have a netdev, so doesn't go
2641 * through the netdev notifier and must be added here
2642 */
2643 mutex_init(&wdev->mtx);
2644 INIT_LIST_HEAD(&wdev->event_list);
2645 spin_lock_init(&wdev->event_lock);
2646 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2647 spin_lock_init(&wdev->mgmt_registrations_lock);
2648
2649 wdev->identifier = ++rdev->wdev_id;
2650 list_add_rcu(&wdev->list, &rdev->wdev_list);
2651 rdev->devlist_generation++;
2652 break;
2653 default:
2654 break;
2655 }
2656
2657 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2658 rdev, wdev) < 0) {
2659 nlmsg_free(msg);
2660 return -ENOBUFS;
2661 }
2662
2663 return genlmsg_reply(msg, info);
2664 }
2665
2666 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2667 {
2668 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2669 struct wireless_dev *wdev = info->user_ptr[1];
2670
2671 if (!rdev->ops->del_virtual_intf)
2672 return -EOPNOTSUPP;
2673
2674 /*
2675 * If we remove a wireless device without a netdev then clear
2676 * user_ptr[1] so that nl80211_post_doit won't dereference it
2677 * to check if it needs to do dev_put(). Otherwise it crashes
2678 * since the wdev has been freed, unlike with a netdev where
2679 * we need the dev_put() for the netdev to really be freed.
2680 */
2681 if (!wdev->netdev)
2682 info->user_ptr[1] = NULL;
2683
2684 return rdev_del_virtual_intf(rdev, wdev);
2685 }
2686
2687 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2688 {
2689 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2690 struct net_device *dev = info->user_ptr[1];
2691 u16 noack_map;
2692
2693 if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2694 return -EINVAL;
2695
2696 if (!rdev->ops->set_noack_map)
2697 return -EOPNOTSUPP;
2698
2699 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2700
2701 return rdev_set_noack_map(rdev, dev, noack_map);
2702 }
2703
2704 struct get_key_cookie {
2705 struct sk_buff *msg;
2706 int error;
2707 int idx;
2708 };
2709
2710 static void get_key_callback(void *c, struct key_params *params)
2711 {
2712 struct nlattr *key;
2713 struct get_key_cookie *cookie = c;
2714
2715 if ((params->key &&
2716 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2717 params->key_len, params->key)) ||
2718 (params->seq &&
2719 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2720 params->seq_len, params->seq)) ||
2721 (params->cipher &&
2722 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2723 params->cipher)))
2724 goto nla_put_failure;
2725
2726 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2727 if (!key)
2728 goto nla_put_failure;
2729
2730 if ((params->key &&
2731 nla_put(cookie->msg, NL80211_KEY_DATA,
2732 params->key_len, params->key)) ||
2733 (params->seq &&
2734 nla_put(cookie->msg, NL80211_KEY_SEQ,
2735 params->seq_len, params->seq)) ||
2736 (params->cipher &&
2737 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2738 params->cipher)))
2739 goto nla_put_failure;
2740
2741 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2742 goto nla_put_failure;
2743
2744 nla_nest_end(cookie->msg, key);
2745
2746 return;
2747 nla_put_failure:
2748 cookie->error = 1;
2749 }
2750
2751 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2752 {
2753 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2754 int err;
2755 struct net_device *dev = info->user_ptr[1];
2756 u8 key_idx = 0;
2757 const u8 *mac_addr = NULL;
2758 bool pairwise;
2759 struct get_key_cookie cookie = {
2760 .error = 0,
2761 };
2762 void *hdr;
2763 struct sk_buff *msg;
2764
2765 if (info->attrs[NL80211_ATTR_KEY_IDX])
2766 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2767
2768 if (key_idx > 5)
2769 return -EINVAL;
2770
2771 if (info->attrs[NL80211_ATTR_MAC])
2772 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2773
2774 pairwise = !!mac_addr;
2775 if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2776 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2777 if (kt >= NUM_NL80211_KEYTYPES)
2778 return -EINVAL;
2779 if (kt != NL80211_KEYTYPE_GROUP &&
2780 kt != NL80211_KEYTYPE_PAIRWISE)
2781 return -EINVAL;
2782 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2783 }
2784
2785 if (!rdev->ops->get_key)
2786 return -EOPNOTSUPP;
2787
2788 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2789 if (!msg)
2790 return -ENOMEM;
2791
2792 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2793 NL80211_CMD_NEW_KEY);
2794 if (!hdr)
2795 goto nla_put_failure;
2796
2797 cookie.msg = msg;
2798 cookie.idx = key_idx;
2799
2800 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2801 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2802 goto nla_put_failure;
2803 if (mac_addr &&
2804 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2805 goto nla_put_failure;
2806
2807 if (pairwise && mac_addr &&
2808 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2809 return -ENOENT;
2810
2811 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2812 get_key_callback);
2813
2814 if (err)
2815 goto free_msg;
2816
2817 if (cookie.error)
2818 goto nla_put_failure;
2819
2820 genlmsg_end(msg, hdr);
2821 return genlmsg_reply(msg, info);
2822
2823 nla_put_failure:
2824 err = -ENOBUFS;
2825 free_msg:
2826 nlmsg_free(msg);
2827 return err;
2828 }
2829
2830 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2831 {
2832 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2833 struct key_parse key;
2834 int err;
2835 struct net_device *dev = info->user_ptr[1];
2836
2837 err = nl80211_parse_key(info, &key);
2838 if (err)
2839 return err;
2840
2841 if (key.idx < 0)
2842 return -EINVAL;
2843
2844 /* only support setting default key */
2845 if (!key.def && !key.defmgmt)
2846 return -EINVAL;
2847
2848 wdev_lock(dev->ieee80211_ptr);
2849
2850 if (key.def) {
2851 if (!rdev->ops->set_default_key) {
2852 err = -EOPNOTSUPP;
2853 goto out;
2854 }
2855
2856 err = nl80211_key_allowed(dev->ieee80211_ptr);
2857 if (err)
2858 goto out;
2859
2860 err = rdev_set_default_key(rdev, dev, key.idx,
2861 key.def_uni, key.def_multi);
2862
2863 if (err)
2864 goto out;
2865
2866 #ifdef CONFIG_CFG80211_WEXT
2867 dev->ieee80211_ptr->wext.default_key = key.idx;
2868 #endif
2869 } else {
2870 if (key.def_uni || !key.def_multi) {
2871 err = -EINVAL;
2872 goto out;
2873 }
2874
2875 if (!rdev->ops->set_default_mgmt_key) {
2876 err = -EOPNOTSUPP;
2877 goto out;
2878 }
2879
2880 err = nl80211_key_allowed(dev->ieee80211_ptr);
2881 if (err)
2882 goto out;
2883
2884 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2885 if (err)
2886 goto out;
2887
2888 #ifdef CONFIG_CFG80211_WEXT
2889 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2890 #endif
2891 }
2892
2893 out:
2894 wdev_unlock(dev->ieee80211_ptr);
2895
2896 return err;
2897 }
2898
2899 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2900 {
2901 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2902 int err;
2903 struct net_device *dev = info->user_ptr[1];
2904 struct key_parse key;
2905 const u8 *mac_addr = NULL;
2906
2907 err = nl80211_parse_key(info, &key);
2908 if (err)
2909 return err;
2910
2911 if (!key.p.key)
2912 return -EINVAL;
2913
2914 if (info->attrs[NL80211_ATTR_MAC])
2915 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2916
2917 if (key.type == -1) {
2918 if (mac_addr)
2919 key.type = NL80211_KEYTYPE_PAIRWISE;
2920 else
2921 key.type = NL80211_KEYTYPE_GROUP;
2922 }
2923
2924 /* for now */
2925 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2926 key.type != NL80211_KEYTYPE_GROUP)
2927 return -EINVAL;
2928
2929 if (!rdev->ops->add_key)
2930 return -EOPNOTSUPP;
2931
2932 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2933 key.type == NL80211_KEYTYPE_PAIRWISE,
2934 mac_addr))
2935 return -EINVAL;
2936
2937 wdev_lock(dev->ieee80211_ptr);
2938 err = nl80211_key_allowed(dev->ieee80211_ptr);
2939 if (!err)
2940 err = rdev_add_key(rdev, dev, key.idx,
2941 key.type == NL80211_KEYTYPE_PAIRWISE,
2942 mac_addr, &key.p);
2943 wdev_unlock(dev->ieee80211_ptr);
2944
2945 return err;
2946 }
2947
2948 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2949 {
2950 struct cfg80211_registered_device *rdev = info->user_ptr[0];
2951 int err;
2952 struct net_device *dev = info->user_ptr[1];
2953 u8 *mac_addr = NULL;
2954 struct key_parse key;
2955
2956 err = nl80211_parse_key(info, &key);
2957 if (err)
2958 return err;
2959
2960 if (info->attrs[NL80211_ATTR_MAC])
2961 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2962
2963 if (key.type == -1) {
2964 if (mac_addr)
2965 key.type = NL80211_KEYTYPE_PAIRWISE;
2966 else
2967 key.type = NL80211_KEYTYPE_GROUP;
2968 }
2969
2970 /* for now */
2971 if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2972 key.type != NL80211_KEYTYPE_GROUP)
2973 return -EINVAL;
2974
2975 if (!rdev->ops->del_key)
2976 return -EOPNOTSUPP;
2977
2978 wdev_lock(dev->ieee80211_ptr);
2979 err = nl80211_key_allowed(dev->ieee80211_ptr);
2980
2981 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2982 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2983 err = -ENOENT;
2984
2985 if (!err)
2986 err = rdev_del_key(rdev, dev, key.idx,
2987 key.type == NL80211_KEYTYPE_PAIRWISE,
2988 mac_addr);
2989
2990 #ifdef CONFIG_CFG80211_WEXT
2991 if (!err) {
2992 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2993 dev->ieee80211_ptr->wext.default_key = -1;
2994 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2995 dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2996 }
2997 #endif
2998 wdev_unlock(dev->ieee80211_ptr);
2999
3000 return err;
3001 }
3002
3003 /* This function returns an error or the number of nested attributes */
3004 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3005 {
3006 struct nlattr *attr;
3007 int n_entries = 0, tmp;
3008
3009 nla_for_each_nested(attr, nl_attr, tmp) {
3010 if (nla_len(attr) != ETH_ALEN)
3011 return -EINVAL;
3012
3013 n_entries++;
3014 }
3015
3016 return n_entries;
3017 }
3018
3019 /*
3020 * This function parses ACL information and allocates memory for ACL data.
3021 * On successful return, the calling function is responsible to free the
3022 * ACL buffer returned by this function.
3023 */
3024 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3025 struct genl_info *info)
3026 {
3027 enum nl80211_acl_policy acl_policy;
3028 struct nlattr *attr;
3029 struct cfg80211_acl_data *acl;
3030 int i = 0, n_entries, tmp;
3031
3032 if (!wiphy->max_acl_mac_addrs)
3033 return ERR_PTR(-EOPNOTSUPP);
3034
3035 if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3036 return ERR_PTR(-EINVAL);
3037
3038 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3039 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3040 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3041 return ERR_PTR(-EINVAL);
3042
3043 if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3044 return ERR_PTR(-EINVAL);
3045
3046 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3047 if (n_entries < 0)
3048 return ERR_PTR(n_entries);
3049
3050 if (n_entries > wiphy->max_acl_mac_addrs)
3051 return ERR_PTR(-ENOTSUPP);
3052
3053 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3054 GFP_KERNEL);
3055 if (!acl)
3056 return ERR_PTR(-ENOMEM);
3057
3058 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3059 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3060 i++;
3061 }
3062
3063 acl->n_acl_entries = n_entries;
3064 acl->acl_policy = acl_policy;
3065
3066 return acl;
3067 }
3068
3069 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3070 {
3071 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3072 struct net_device *dev = info->user_ptr[1];
3073 struct cfg80211_acl_data *acl;
3074 int err;
3075
3076 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3077 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3078 return -EOPNOTSUPP;
3079
3080 if (!dev->ieee80211_ptr->beacon_interval)
3081 return -EINVAL;
3082
3083 acl = parse_acl_data(&rdev->wiphy, info);
3084 if (IS_ERR(acl))
3085 return PTR_ERR(acl);
3086
3087 err = rdev_set_mac_acl(rdev, dev, acl);
3088
3089 kfree(acl);
3090
3091 return err;
3092 }
3093
3094 static int nl80211_parse_beacon(struct nlattr *attrs[],
3095 struct cfg80211_beacon_data *bcn)
3096 {
3097 bool haveinfo = false;
3098
3099 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3100 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3101 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3102 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3103 return -EINVAL;
3104
3105 memset(bcn, 0, sizeof(*bcn));
3106
3107 if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3108 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3109 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3110 if (!bcn->head_len)
3111 return -EINVAL;
3112 haveinfo = true;
3113 }
3114
3115 if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3116 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3117 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3118 haveinfo = true;
3119 }
3120
3121 if (!haveinfo)
3122 return -EINVAL;
3123
3124 if (attrs[NL80211_ATTR_IE]) {
3125 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3126 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3127 }
3128
3129 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3130 bcn->proberesp_ies =
3131 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3132 bcn->proberesp_ies_len =
3133 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3134 }
3135
3136 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3137 bcn->assocresp_ies =
3138 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3139 bcn->assocresp_ies_len =
3140 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3141 }
3142
3143 if (attrs[NL80211_ATTR_PROBE_RESP]) {
3144 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3145 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3146 }
3147
3148 return 0;
3149 }
3150
3151 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3152 struct cfg80211_ap_settings *params)
3153 {
3154 struct wireless_dev *wdev;
3155 bool ret = false;
3156
3157 list_for_each_entry(wdev, &rdev->wdev_list, list) {
3158 if (wdev->iftype != NL80211_IFTYPE_AP &&
3159 wdev->iftype != NL80211_IFTYPE_P2P_GO)
3160 continue;
3161
3162 if (!wdev->preset_chandef.chan)
3163 continue;
3164
3165 params->chandef = wdev->preset_chandef;
3166 ret = true;
3167 break;
3168 }
3169
3170 return ret;
3171 }
3172
3173 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3174 enum nl80211_auth_type auth_type,
3175 enum nl80211_commands cmd)
3176 {
3177 if (auth_type > NL80211_AUTHTYPE_MAX)
3178 return false;
3179
3180 switch (cmd) {
3181 case NL80211_CMD_AUTHENTICATE:
3182 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3183 auth_type == NL80211_AUTHTYPE_SAE)
3184 return false;
3185 return true;
3186 case NL80211_CMD_CONNECT:
3187 case NL80211_CMD_START_AP:
3188 /* SAE not supported yet */
3189 if (auth_type == NL80211_AUTHTYPE_SAE)
3190 return false;
3191 return true;
3192 default:
3193 return false;
3194 }
3195 }
3196
3197 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3198 {
3199 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3200 struct net_device *dev = info->user_ptr[1];
3201 struct wireless_dev *wdev = dev->ieee80211_ptr;
3202 struct cfg80211_ap_settings params;
3203 int err;
3204
3205 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3206 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3207 return -EOPNOTSUPP;
3208
3209 if (!rdev->ops->start_ap)
3210 return -EOPNOTSUPP;
3211
3212 if (wdev->beacon_interval)
3213 return -EALREADY;
3214
3215 memset(&params, 0, sizeof(params));
3216
3217 /* these are required for START_AP */
3218 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3219 !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3220 !info->attrs[NL80211_ATTR_BEACON_HEAD])
3221 return -EINVAL;
3222
3223 err = nl80211_parse_beacon(info->attrs, &params.beacon);
3224 if (err)
3225 return err;
3226
3227 params.beacon_interval =
3228 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3229 params.dtim_period =
3230 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3231
3232 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3233 if (err)
3234 return err;
3235
3236 /*
3237 * In theory, some of these attributes should be required here
3238 * but since they were not used when the command was originally
3239 * added, keep them optional for old user space programs to let
3240 * them continue to work with drivers that do not need the
3241 * additional information -- drivers must check!
3242 */
3243 if (info->attrs[NL80211_ATTR_SSID]) {
3244 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3245 params.ssid_len =
3246 nla_len(info->attrs[NL80211_ATTR_SSID]);
3247 if (params.ssid_len == 0 ||
3248 params.ssid_len > IEEE80211_MAX_SSID_LEN)
3249 return -EINVAL;
3250 }
3251
3252 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3253 params.hidden_ssid = nla_get_u32(
3254 info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3255 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3256 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3257 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3258 return -EINVAL;
3259 }
3260
3261 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3262
3263 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3264 params.auth_type = nla_get_u32(
3265 info->attrs[NL80211_ATTR_AUTH_TYPE]);
3266 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3267 NL80211_CMD_START_AP))
3268 return -EINVAL;
3269 } else
3270 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3271
3272 err = nl80211_crypto_settings(rdev, info, &params.crypto,
3273 NL80211_MAX_NR_CIPHER_SUITES);
3274 if (err)
3275 return err;
3276
3277 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3278 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3279 return -EOPNOTSUPP;
3280 params.inactivity_timeout = nla_get_u16(
3281 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3282 }
3283
3284 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3285 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3286 return -EINVAL;
3287 params.p2p_ctwindow =
3288 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3289 if (params.p2p_ctwindow > 127)
3290 return -EINVAL;
3291 if (params.p2p_ctwindow != 0 &&
3292 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3293 return -EINVAL;
3294 }
3295
3296 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3297 u8 tmp;
3298
3299 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3300 return -EINVAL;
3301 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3302 if (tmp > 1)
3303 return -EINVAL;
3304 params.p2p_opp_ps = tmp;
3305 if (params.p2p_opp_ps != 0 &&
3306 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3307 return -EINVAL;
3308 }
3309
3310 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3311 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3312 if (err)
3313 return err;
3314 } else if (wdev->preset_chandef.chan) {
3315 params.chandef = wdev->preset_chandef;
3316 } else if (!nl80211_get_ap_channel(rdev, &params))
3317 return -EINVAL;
3318
3319 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
3320 wdev->iftype))
3321 return -EINVAL;
3322
3323 if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3324 params.acl = parse_acl_data(&rdev->wiphy, info);
3325 if (IS_ERR(params.acl))
3326 return PTR_ERR(params.acl);
3327 }
3328
3329 wdev_lock(wdev);
3330 err = rdev_start_ap(rdev, dev, &params);
3331 if (!err) {
3332 wdev->preset_chandef = params.chandef;
3333 wdev->beacon_interval = params.beacon_interval;
3334 wdev->chandef = params.chandef;
3335 wdev->ssid_len = params.ssid_len;
3336 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3337 }
3338 wdev_unlock(wdev);
3339
3340 kfree(params.acl);
3341
3342 return err;
3343 }
3344
3345 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3346 {
3347 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3348 struct net_device *dev = info->user_ptr[1];
3349 struct wireless_dev *wdev = dev->ieee80211_ptr;
3350 struct cfg80211_beacon_data params;
3351 int err;
3352
3353 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3354 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3355 return -EOPNOTSUPP;
3356
3357 if (!rdev->ops->change_beacon)
3358 return -EOPNOTSUPP;
3359
3360 if (!wdev->beacon_interval)
3361 return -EINVAL;
3362
3363 err = nl80211_parse_beacon(info->attrs, &params);
3364 if (err)
3365 return err;
3366
3367 wdev_lock(wdev);
3368 err = rdev_change_beacon(rdev, dev, &params);
3369 wdev_unlock(wdev);
3370
3371 return err;
3372 }
3373
3374 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3375 {
3376 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3377 struct net_device *dev = info->user_ptr[1];
3378
3379 return cfg80211_stop_ap(rdev, dev, false);
3380 }
3381
3382 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3383 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3384 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3385 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3386 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3387 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3388 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3389 };
3390
3391 static int parse_station_flags(struct genl_info *info,
3392 enum nl80211_iftype iftype,
3393 struct station_parameters *params)
3394 {
3395 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3396 struct nlattr *nla;
3397 int flag;
3398
3399 /*
3400 * Try parsing the new attribute first so userspace
3401 * can specify both for older kernels.
3402 */
3403 nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3404 if (nla) {
3405 struct nl80211_sta_flag_update *sta_flags;
3406
3407 sta_flags = nla_data(nla);
3408 params->sta_flags_mask = sta_flags->mask;
3409 params->sta_flags_set = sta_flags->set;
3410 params->sta_flags_set &= params->sta_flags_mask;
3411 if ((params->sta_flags_mask |
3412 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3413 return -EINVAL;
3414 return 0;
3415 }
3416
3417 /* if present, parse the old attribute */
3418
3419 nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3420 if (!nla)
3421 return 0;
3422
3423 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3424 nla, sta_flags_policy))
3425 return -EINVAL;
3426
3427 /*
3428 * Only allow certain flags for interface types so that
3429 * other attributes are silently ignored. Remember that
3430 * this is backward compatibility code with old userspace
3431 * and shouldn't be hit in other cases anyway.
3432 */
3433 switch (iftype) {
3434 case NL80211_IFTYPE_AP:
3435 case NL80211_IFTYPE_AP_VLAN:
3436 case NL80211_IFTYPE_P2P_GO:
3437 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3438 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3439 BIT(NL80211_STA_FLAG_WME) |
3440 BIT(NL80211_STA_FLAG_MFP);
3441 break;
3442 case NL80211_IFTYPE_P2P_CLIENT:
3443 case NL80211_IFTYPE_STATION:
3444 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3445 BIT(NL80211_STA_FLAG_TDLS_PEER);
3446 break;
3447 case NL80211_IFTYPE_MESH_POINT:
3448 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3449 BIT(NL80211_STA_FLAG_MFP) |
3450 BIT(NL80211_STA_FLAG_AUTHORIZED);
3451 default:
3452 return -EINVAL;
3453 }
3454
3455 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3456 if (flags[flag]) {
3457 params->sta_flags_set |= (1<<flag);
3458
3459 /* no longer support new API additions in old API */
3460 if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3461 return -EINVAL;
3462 }
3463 }
3464
3465 return 0;
3466 }
3467
3468 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3469 int attr)
3470 {
3471 struct nlattr *rate;
3472 u32 bitrate;
3473 u16 bitrate_compat;
3474
3475 rate = nla_nest_start(msg, attr);
3476 if (!rate)
3477 return false;
3478
3479 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3480 bitrate = cfg80211_calculate_bitrate(info);
3481 /* report 16-bit bitrate only if we can */
3482 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3483 if (bitrate > 0 &&
3484 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3485 return false;
3486 if (bitrate_compat > 0 &&
3487 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3488 return false;
3489
3490 if (info->flags & RATE_INFO_FLAGS_MCS) {
3491 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3492 return false;
3493 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3494 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3495 return false;
3496 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3497 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3498 return false;
3499 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3500 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3501 return false;
3502 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3503 return false;
3504 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3505 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3506 return false;
3507 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3508 nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3509 return false;
3510 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3511 nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3512 return false;
3513 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3514 nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3515 return false;
3516 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3517 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3518 return false;
3519 }
3520
3521 nla_nest_end(msg, rate);
3522 return true;
3523 }
3524
3525 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3526 int id)
3527 {
3528 void *attr;
3529 int i = 0;
3530
3531 if (!mask)
3532 return true;
3533
3534 attr = nla_nest_start(msg, id);
3535 if (!attr)
3536 return false;
3537
3538 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3539 if (!(mask & BIT(i)))
3540 continue;
3541
3542 if (nla_put_u8(msg, i, signal[i]))
3543 return false;
3544 }
3545
3546 nla_nest_end(msg, attr);
3547
3548 return true;
3549 }
3550
3551 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3552 int flags,
3553 struct cfg80211_registered_device *rdev,
3554 struct net_device *dev,
3555 const u8 *mac_addr, struct station_info *sinfo)
3556 {
3557 void *hdr;
3558 struct nlattr *sinfoattr, *bss_param;
3559
3560 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3561 if (!hdr)
3562 return -1;
3563
3564 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3565 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3566 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3567 goto nla_put_failure;
3568
3569 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3570 if (!sinfoattr)
3571 goto nla_put_failure;
3572 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3573 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3574 sinfo->connected_time))
3575 goto nla_put_failure;
3576 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3577 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3578 sinfo->inactive_time))
3579 goto nla_put_failure;
3580 if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3581 STATION_INFO_RX_BYTES64)) &&
3582 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3583 (u32)sinfo->rx_bytes))
3584 goto nla_put_failure;
3585 if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3586 STATION_INFO_TX_BYTES64)) &&
3587 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3588 (u32)sinfo->tx_bytes))
3589 goto nla_put_failure;
3590 if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3591 nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3592 sinfo->rx_bytes))
3593 goto nla_put_failure;
3594 if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3595 nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3596 sinfo->tx_bytes))
3597 goto nla_put_failure;
3598 if ((sinfo->filled & STATION_INFO_LLID) &&
3599 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3600 goto nla_put_failure;
3601 if ((sinfo->filled & STATION_INFO_PLID) &&
3602 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3603 goto nla_put_failure;
3604 if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3605 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3606 sinfo->plink_state))
3607 goto nla_put_failure;
3608 switch (rdev->wiphy.signal_type) {
3609 case CFG80211_SIGNAL_TYPE_MBM:
3610 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3611 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3612 sinfo->signal))
3613 goto nla_put_failure;
3614 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3615 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3616 sinfo->signal_avg))
3617 goto nla_put_failure;
3618 break;
3619 default:
3620 break;
3621 }
3622 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3623 if (!nl80211_put_signal(msg, sinfo->chains,
3624 sinfo->chain_signal,
3625 NL80211_STA_INFO_CHAIN_SIGNAL))
3626 goto nla_put_failure;
3627 }
3628 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3629 if (!nl80211_put_signal(msg, sinfo->chains,
3630 sinfo->chain_signal_avg,
3631 NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3632 goto nla_put_failure;
3633 }
3634 if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3635 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3636 NL80211_STA_INFO_TX_BITRATE))
3637 goto nla_put_failure;
3638 }
3639 if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3640 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3641 NL80211_STA_INFO_RX_BITRATE))
3642 goto nla_put_failure;
3643 }
3644 if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3645 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3646 sinfo->rx_packets))
3647 goto nla_put_failure;
3648 if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3649 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3650 sinfo->tx_packets))
3651 goto nla_put_failure;
3652 if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3653 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3654 sinfo->tx_retries))
3655 goto nla_put_failure;
3656 if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3657 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3658 sinfo->tx_failed))
3659 goto nla_put_failure;
3660 if ((sinfo->filled & STATION_INFO_EXPECTED_THROUGHPUT) &&
3661 nla_put_u32(msg, NL80211_STA_INFO_EXPECTED_THROUGHPUT,
3662 sinfo->expected_throughput))
3663 goto nla_put_failure;
3664 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3665 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3666 sinfo->beacon_loss_count))
3667 goto nla_put_failure;
3668 if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3669 nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3670 sinfo->local_pm))
3671 goto nla_put_failure;
3672 if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3673 nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3674 sinfo->peer_pm))
3675 goto nla_put_failure;
3676 if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3677 nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3678 sinfo->nonpeer_pm))
3679 goto nla_put_failure;
3680 if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3681 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3682 if (!bss_param)
3683 goto nla_put_failure;
3684
3685 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3686 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3687 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3688 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3689 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3690 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3691 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3692 sinfo->bss_param.dtim_period) ||
3693 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3694 sinfo->bss_param.beacon_interval))
3695 goto nla_put_failure;
3696
3697 nla_nest_end(msg, bss_param);
3698 }
3699 if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3700 nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3701 sizeof(struct nl80211_sta_flag_update),
3702 &sinfo->sta_flags))
3703 goto nla_put_failure;
3704 if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3705 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3706 sinfo->t_offset))
3707 goto nla_put_failure;
3708 nla_nest_end(msg, sinfoattr);
3709
3710 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3711 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3712 sinfo->assoc_req_ies))
3713 goto nla_put_failure;
3714
3715 return genlmsg_end(msg, hdr);
3716
3717 nla_put_failure:
3718 genlmsg_cancel(msg, hdr);
3719 return -EMSGSIZE;
3720 }
3721
3722 static int nl80211_dump_station(struct sk_buff *skb,
3723 struct netlink_callback *cb)
3724 {
3725 struct station_info sinfo;
3726 struct cfg80211_registered_device *rdev;
3727 struct wireless_dev *wdev;
3728 u8 mac_addr[ETH_ALEN];
3729 int sta_idx = cb->args[2];
3730 int err;
3731
3732 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3733 if (err)
3734 return err;
3735
3736 if (!wdev->netdev) {
3737 err = -EINVAL;
3738 goto out_err;
3739 }
3740
3741 if (!rdev->ops->dump_station) {
3742 err = -EOPNOTSUPP;
3743 goto out_err;
3744 }
3745
3746 while (1) {
3747 memset(&sinfo, 0, sizeof(sinfo));
3748 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3749 mac_addr, &sinfo);
3750 if (err == -ENOENT)
3751 break;
3752 if (err)
3753 goto out_err;
3754
3755 if (nl80211_send_station(skb,
3756 NETLINK_CB(cb->skb).portid,
3757 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3758 rdev, wdev->netdev, mac_addr,
3759 &sinfo) < 0)
3760 goto out;
3761
3762 sta_idx++;
3763 }
3764
3765
3766 out:
3767 cb->args[2] = sta_idx;
3768 err = skb->len;
3769 out_err:
3770 nl80211_finish_wdev_dump(rdev);
3771
3772 return err;
3773 }
3774
3775 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3776 {
3777 struct cfg80211_registered_device *rdev = info->user_ptr[0];
3778 struct net_device *dev = info->user_ptr[1];
3779 struct station_info sinfo;
3780 struct sk_buff *msg;
3781 u8 *mac_addr = NULL;
3782 int err;
3783
3784 memset(&sinfo, 0, sizeof(sinfo));
3785
3786 if (!info->attrs[NL80211_ATTR_MAC])
3787 return -EINVAL;
3788
3789 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3790
3791 if (!rdev->ops->get_station)
3792 return -EOPNOTSUPP;
3793
3794 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3795 if (err)
3796 return err;
3797
3798 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3799 if (!msg)
3800 return -ENOMEM;
3801
3802 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3803 rdev, dev, mac_addr, &sinfo) < 0) {
3804 nlmsg_free(msg);
3805 return -ENOBUFS;
3806 }
3807
3808 return genlmsg_reply(msg, info);
3809 }
3810
3811 int cfg80211_check_station_change(struct wiphy *wiphy,
3812 struct station_parameters *params,
3813 enum cfg80211_station_type statype)
3814 {
3815 if (params->listen_interval != -1)
3816 return -EINVAL;
3817 if (params->aid &&
3818 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3819 return -EINVAL;
3820
3821 /* When you run into this, adjust the code below for the new flag */
3822 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3823
3824 switch (statype) {
3825 case CFG80211_STA_MESH_PEER_KERNEL:
3826 case CFG80211_STA_MESH_PEER_USER:
3827 /*
3828 * No ignoring the TDLS flag here -- the userspace mesh
3829 * code doesn't have the bug of including TDLS in the
3830 * mask everywhere.
3831 */
3832 if (params->sta_flags_mask &
3833 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3834 BIT(NL80211_STA_FLAG_MFP) |
3835 BIT(NL80211_STA_FLAG_AUTHORIZED)))
3836 return -EINVAL;
3837 break;
3838 case CFG80211_STA_TDLS_PEER_SETUP:
3839 case CFG80211_STA_TDLS_PEER_ACTIVE:
3840 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3841 return -EINVAL;
3842 /* ignore since it can't change */
3843 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3844 break;
3845 default:
3846 /* disallow mesh-specific things */
3847 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3848 return -EINVAL;
3849 if (params->local_pm)
3850 return -EINVAL;
3851 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3852 return -EINVAL;
3853 }
3854
3855 if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3856 statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3857 /* TDLS can't be set, ... */
3858 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3859 return -EINVAL;
3860 /*
3861 * ... but don't bother the driver with it. This works around
3862 * a hostapd/wpa_supplicant issue -- it always includes the
3863 * TLDS_PEER flag in the mask even for AP mode.
3864 */
3865 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3866 }
3867
3868 if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3869 /* reject other things that can't change */
3870 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3871 return -EINVAL;
3872 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3873 return -EINVAL;
3874 if (params->supported_rates)
3875 return -EINVAL;
3876 if (params->ext_capab || params->ht_capa || params->vht_capa)
3877 return -EINVAL;
3878 }
3879
3880 if (statype != CFG80211_STA_AP_CLIENT) {
3881 if (params->vlan)
3882 return -EINVAL;
3883 }
3884
3885 switch (statype) {
3886 case CFG80211_STA_AP_MLME_CLIENT:
3887 /* Use this only for authorizing/unauthorizing a station */
3888 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3889 return -EOPNOTSUPP;
3890 break;
3891 case CFG80211_STA_AP_CLIENT:
3892 /* accept only the listed bits */
3893 if (params->sta_flags_mask &
3894 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3895 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3896 BIT(NL80211_STA_FLAG_ASSOCIATED) |
3897 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3898 BIT(NL80211_STA_FLAG_WME) |
3899 BIT(NL80211_STA_FLAG_MFP)))
3900 return -EINVAL;
3901
3902 /* but authenticated/associated only if driver handles it */
3903 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3904 params->sta_flags_mask &
3905 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3906 BIT(NL80211_STA_FLAG_ASSOCIATED)))
3907 return -EINVAL;
3908 break;
3909 case CFG80211_STA_IBSS:
3910 case CFG80211_STA_AP_STA:
3911 /* reject any changes other than AUTHORIZED */
3912 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3913 return -EINVAL;
3914 break;
3915 case CFG80211_STA_TDLS_PEER_SETUP:
3916 /* reject any changes other than AUTHORIZED or WME */
3917 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3918 BIT(NL80211_STA_FLAG_WME)))
3919 return -EINVAL;
3920 /* force (at least) rates when authorizing */
3921 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3922 !params->supported_rates)
3923 return -EINVAL;
3924 break;
3925 case CFG80211_STA_TDLS_PEER_ACTIVE:
3926 /* reject any changes */
3927 return -EINVAL;
3928 case CFG80211_STA_MESH_PEER_KERNEL:
3929 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3930 return -EINVAL;
3931 break;
3932 case CFG80211_STA_MESH_PEER_USER:
3933 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3934 return -EINVAL;
3935 break;
3936 }
3937
3938 return 0;
3939 }
3940 EXPORT_SYMBOL(cfg80211_check_station_change);
3941
3942 /*
3943 * Get vlan interface making sure it is running and on the right wiphy.
3944 */
3945 static struct net_device *get_vlan(struct genl_info *info,
3946 struct cfg80211_registered_device *rdev)
3947 {
3948 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3949 struct net_device *v;
3950 int ret;
3951
3952 if (!vlanattr)
3953 return NULL;
3954
3955 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3956 if (!v)
3957 return ERR_PTR(-ENODEV);
3958
3959 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
3960 ret = -EINVAL;
3961 goto error;
3962 }
3963
3964 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3965 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3966 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3967 ret = -EINVAL;
3968 goto error;
3969 }
3970
3971 if (!netif_running(v)) {
3972 ret = -ENETDOWN;
3973 goto error;
3974 }
3975
3976 return v;
3977 error:
3978 dev_put(v);
3979 return ERR_PTR(ret);
3980 }
3981
3982 static const struct nla_policy
3983 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
3984 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3985 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3986 };
3987
3988 static int nl80211_parse_sta_wme(struct genl_info *info,
3989 struct station_parameters *params)
3990 {
3991 struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3992 struct nlattr *nla;
3993 int err;
3994
3995 /* parse WME attributes if present */
3996 if (!info->attrs[NL80211_ATTR_STA_WME])
3997 return 0;
3998
3999 nla = info->attrs[NL80211_ATTR_STA_WME];
4000 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4001 nl80211_sta_wme_policy);
4002 if (err)
4003 return err;
4004
4005 if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4006 params->uapsd_queues = nla_get_u8(
4007 tb[NL80211_STA_WME_UAPSD_QUEUES]);
4008 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4009 return -EINVAL;
4010
4011 if (tb[NL80211_STA_WME_MAX_SP])
4012 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4013
4014 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4015 return -EINVAL;
4016
4017 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4018
4019 return 0;
4020 }
4021
4022 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4023 struct station_parameters *params)
4024 {
4025 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4026 params->supported_channels =
4027 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4028 params->supported_channels_len =
4029 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4030 /*
4031 * Need to include at least one (first channel, number of
4032 * channels) tuple for each subband, and must have proper
4033 * tuples for the rest of the data as well.
4034 */
4035 if (params->supported_channels_len < 2)
4036 return -EINVAL;
4037 if (params->supported_channels_len % 2)
4038 return -EINVAL;
4039 }
4040
4041 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4042 params->supported_oper_classes =
4043 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4044 params->supported_oper_classes_len =
4045 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4046 /*
4047 * The value of the Length field of the Supported Operating
4048 * Classes element is between 2 and 253.
4049 */
4050 if (params->supported_oper_classes_len < 2 ||
4051 params->supported_oper_classes_len > 253)
4052 return -EINVAL;
4053 }
4054 return 0;
4055 }
4056
4057 static int nl80211_set_station_tdls(struct genl_info *info,
4058 struct station_parameters *params)
4059 {
4060 int err;
4061 /* Dummy STA entry gets updated once the peer capabilities are known */
4062 if (info->attrs[NL80211_ATTR_PEER_AID])
4063 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4064 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4065 params->ht_capa =
4066 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4067 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4068 params->vht_capa =
4069 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4070
4071 err = nl80211_parse_sta_channel_info(info, params);
4072 if (err)
4073 return err;
4074
4075 return nl80211_parse_sta_wme(info, params);
4076 }
4077
4078 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4079 {
4080 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4081 struct net_device *dev = info->user_ptr[1];
4082 struct station_parameters params;
4083 u8 *mac_addr;
4084 int err;
4085
4086 memset(&params, 0, sizeof(params));
4087
4088 params.listen_interval = -1;
4089
4090 if (!rdev->ops->change_station)
4091 return -EOPNOTSUPP;
4092
4093 if (info->attrs[NL80211_ATTR_STA_AID])
4094 return -EINVAL;
4095
4096 if (!info->attrs[NL80211_ATTR_MAC])
4097 return -EINVAL;
4098
4099 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4100
4101 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4102 params.supported_rates =
4103 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4104 params.supported_rates_len =
4105 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4106 }
4107
4108 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4109 params.capability =
4110 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4111 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4112 }
4113
4114 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4115 params.ext_capab =
4116 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4117 params.ext_capab_len =
4118 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4119 }
4120
4121 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4122 return -EINVAL;
4123
4124 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4125 return -EINVAL;
4126
4127 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4128 params.plink_action =
4129 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4130 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4131 return -EINVAL;
4132 }
4133
4134 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4135 params.plink_state =
4136 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4137 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4138 return -EINVAL;
4139 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4140 }
4141
4142 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4143 enum nl80211_mesh_power_mode pm = nla_get_u32(
4144 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4145
4146 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4147 pm > NL80211_MESH_POWER_MAX)
4148 return -EINVAL;
4149
4150 params.local_pm = pm;
4151 }
4152
4153 /* Include parameters for TDLS peer (will check later) */
4154 err = nl80211_set_station_tdls(info, &params);
4155 if (err)
4156 return err;
4157
4158 params.vlan = get_vlan(info, rdev);
4159 if (IS_ERR(params.vlan))
4160 return PTR_ERR(params.vlan);
4161
4162 switch (dev->ieee80211_ptr->iftype) {
4163 case NL80211_IFTYPE_AP:
4164 case NL80211_IFTYPE_AP_VLAN:
4165 case NL80211_IFTYPE_P2P_GO:
4166 case NL80211_IFTYPE_P2P_CLIENT:
4167 case NL80211_IFTYPE_STATION:
4168 case NL80211_IFTYPE_ADHOC:
4169 case NL80211_IFTYPE_MESH_POINT:
4170 break;
4171 default:
4172 err = -EOPNOTSUPP;
4173 goto out_put_vlan;
4174 }
4175
4176 /* driver will call cfg80211_check_station_change() */
4177 err = rdev_change_station(rdev, dev, mac_addr, &params);
4178
4179 out_put_vlan:
4180 if (params.vlan)
4181 dev_put(params.vlan);
4182
4183 return err;
4184 }
4185
4186 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4187 {
4188 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4189 int err;
4190 struct net_device *dev = info->user_ptr[1];
4191 struct station_parameters params;
4192 u8 *mac_addr = NULL;
4193
4194 memset(&params, 0, sizeof(params));
4195
4196 if (!rdev->ops->add_station)
4197 return -EOPNOTSUPP;
4198
4199 if (!info->attrs[NL80211_ATTR_MAC])
4200 return -EINVAL;
4201
4202 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4203 return -EINVAL;
4204
4205 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4206 return -EINVAL;
4207
4208 if (!info->attrs[NL80211_ATTR_STA_AID] &&
4209 !info->attrs[NL80211_ATTR_PEER_AID])
4210 return -EINVAL;
4211
4212 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4213 params.supported_rates =
4214 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4215 params.supported_rates_len =
4216 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4217 params.listen_interval =
4218 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4219
4220 if (info->attrs[NL80211_ATTR_PEER_AID])
4221 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4222 else
4223 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4224 if (!params.aid || params.aid > IEEE80211_MAX_AID)
4225 return -EINVAL;
4226
4227 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4228 params.capability =
4229 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4230 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4231 }
4232
4233 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4234 params.ext_capab =
4235 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4236 params.ext_capab_len =
4237 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4238 }
4239
4240 if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4241 params.ht_capa =
4242 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4243
4244 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4245 params.vht_capa =
4246 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4247
4248 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4249 params.opmode_notif_used = true;
4250 params.opmode_notif =
4251 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4252 }
4253
4254 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4255 params.plink_action =
4256 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4257 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4258 return -EINVAL;
4259 }
4260
4261 err = nl80211_parse_sta_channel_info(info, &params);
4262 if (err)
4263 return err;
4264
4265 err = nl80211_parse_sta_wme(info, &params);
4266 if (err)
4267 return err;
4268
4269 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4270 return -EINVAL;
4271
4272 /* When you run into this, adjust the code below for the new flag */
4273 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4274
4275 switch (dev->ieee80211_ptr->iftype) {
4276 case NL80211_IFTYPE_AP:
4277 case NL80211_IFTYPE_AP_VLAN:
4278 case NL80211_IFTYPE_P2P_GO:
4279 /* ignore WME attributes if iface/sta is not capable */
4280 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4281 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4282 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4283
4284 /* TDLS peers cannot be added */
4285 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4286 info->attrs[NL80211_ATTR_PEER_AID])
4287 return -EINVAL;
4288 /* but don't bother the driver with it */
4289 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4290
4291 /* allow authenticated/associated only if driver handles it */
4292 if (!(rdev->wiphy.features &
4293 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4294 params.sta_flags_mask &
4295 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4296 BIT(NL80211_STA_FLAG_ASSOCIATED)))
4297 return -EINVAL;
4298
4299 /* must be last in here for error handling */
4300 params.vlan = get_vlan(info, rdev);
4301 if (IS_ERR(params.vlan))
4302 return PTR_ERR(params.vlan);
4303 break;
4304 case NL80211_IFTYPE_MESH_POINT:
4305 /* ignore uAPSD data */
4306 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4307
4308 /* associated is disallowed */
4309 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4310 return -EINVAL;
4311 /* TDLS peers cannot be added */
4312 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4313 info->attrs[NL80211_ATTR_PEER_AID])
4314 return -EINVAL;
4315 break;
4316 case NL80211_IFTYPE_STATION:
4317 case NL80211_IFTYPE_P2P_CLIENT:
4318 /* ignore uAPSD data */
4319 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4320
4321 /* these are disallowed */
4322 if (params.sta_flags_mask &
4323 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4324 BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4325 return -EINVAL;
4326 /* Only TDLS peers can be added */
4327 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4328 return -EINVAL;
4329 /* Can only add if TDLS ... */
4330 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4331 return -EOPNOTSUPP;
4332 /* ... with external setup is supported */
4333 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4334 return -EOPNOTSUPP;
4335 /*
4336 * Older wpa_supplicant versions always mark the TDLS peer
4337 * as authorized, but it shouldn't yet be.
4338 */
4339 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4340 break;
4341 default:
4342 return -EOPNOTSUPP;
4343 }
4344
4345 /* be aware of params.vlan when changing code here */
4346
4347 err = rdev_add_station(rdev, dev, mac_addr, &params);
4348
4349 if (params.vlan)
4350 dev_put(params.vlan);
4351 return err;
4352 }
4353
4354 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4355 {
4356 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4357 struct net_device *dev = info->user_ptr[1];
4358 u8 *mac_addr = NULL;
4359
4360 if (info->attrs[NL80211_ATTR_MAC])
4361 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4362
4363 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4364 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4365 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4366 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4367 return -EINVAL;
4368
4369 if (!rdev->ops->del_station)
4370 return -EOPNOTSUPP;
4371
4372 return rdev_del_station(rdev, dev, mac_addr);
4373 }
4374
4375 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4376 int flags, struct net_device *dev,
4377 u8 *dst, u8 *next_hop,
4378 struct mpath_info *pinfo)
4379 {
4380 void *hdr;
4381 struct nlattr *pinfoattr;
4382
4383 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
4384 if (!hdr)
4385 return -1;
4386
4387 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4388 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4389 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4390 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4391 goto nla_put_failure;
4392
4393 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4394 if (!pinfoattr)
4395 goto nla_put_failure;
4396 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4397 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4398 pinfo->frame_qlen))
4399 goto nla_put_failure;
4400 if (((pinfo->filled & MPATH_INFO_SN) &&
4401 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4402 ((pinfo->filled & MPATH_INFO_METRIC) &&
4403 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4404 pinfo->metric)) ||
4405 ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4406 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4407 pinfo->exptime)) ||
4408 ((pinfo->filled & MPATH_INFO_FLAGS) &&
4409 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4410 pinfo->flags)) ||
4411 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4412 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4413 pinfo->discovery_timeout)) ||
4414 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4415 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4416 pinfo->discovery_retries)))
4417 goto nla_put_failure;
4418
4419 nla_nest_end(msg, pinfoattr);
4420
4421 return genlmsg_end(msg, hdr);
4422
4423 nla_put_failure:
4424 genlmsg_cancel(msg, hdr);
4425 return -EMSGSIZE;
4426 }
4427
4428 static int nl80211_dump_mpath(struct sk_buff *skb,
4429 struct netlink_callback *cb)
4430 {
4431 struct mpath_info pinfo;
4432 struct cfg80211_registered_device *rdev;
4433 struct wireless_dev *wdev;
4434 u8 dst[ETH_ALEN];
4435 u8 next_hop[ETH_ALEN];
4436 int path_idx = cb->args[2];
4437 int err;
4438
4439 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4440 if (err)
4441 return err;
4442
4443 if (!rdev->ops->dump_mpath) {
4444 err = -EOPNOTSUPP;
4445 goto out_err;
4446 }
4447
4448 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4449 err = -EOPNOTSUPP;
4450 goto out_err;
4451 }
4452
4453 while (1) {
4454 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4455 next_hop, &pinfo);
4456 if (err == -ENOENT)
4457 break;
4458 if (err)
4459 goto out_err;
4460
4461 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4462 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4463 wdev->netdev, dst, next_hop,
4464 &pinfo) < 0)
4465 goto out;
4466
4467 path_idx++;
4468 }
4469
4470
4471 out:
4472 cb->args[2] = path_idx;
4473 err = skb->len;
4474 out_err:
4475 nl80211_finish_wdev_dump(rdev);
4476 return err;
4477 }
4478
4479 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4480 {
4481 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4482 int err;
4483 struct net_device *dev = info->user_ptr[1];
4484 struct mpath_info pinfo;
4485 struct sk_buff *msg;
4486 u8 *dst = NULL;
4487 u8 next_hop[ETH_ALEN];
4488
4489 memset(&pinfo, 0, sizeof(pinfo));
4490
4491 if (!info->attrs[NL80211_ATTR_MAC])
4492 return -EINVAL;
4493
4494 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4495
4496 if (!rdev->ops->get_mpath)
4497 return -EOPNOTSUPP;
4498
4499 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4500 return -EOPNOTSUPP;
4501
4502 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4503 if (err)
4504 return err;
4505
4506 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4507 if (!msg)
4508 return -ENOMEM;
4509
4510 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4511 dev, dst, next_hop, &pinfo) < 0) {
4512 nlmsg_free(msg);
4513 return -ENOBUFS;
4514 }
4515
4516 return genlmsg_reply(msg, info);
4517 }
4518
4519 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4520 {
4521 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4522 struct net_device *dev = info->user_ptr[1];
4523 u8 *dst = NULL;
4524 u8 *next_hop = NULL;
4525
4526 if (!info->attrs[NL80211_ATTR_MAC])
4527 return -EINVAL;
4528
4529 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4530 return -EINVAL;
4531
4532 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4533 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4534
4535 if (!rdev->ops->change_mpath)
4536 return -EOPNOTSUPP;
4537
4538 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4539 return -EOPNOTSUPP;
4540
4541 return rdev_change_mpath(rdev, dev, dst, next_hop);
4542 }
4543
4544 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4545 {
4546 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4547 struct net_device *dev = info->user_ptr[1];
4548 u8 *dst = NULL;
4549 u8 *next_hop = NULL;
4550
4551 if (!info->attrs[NL80211_ATTR_MAC])
4552 return -EINVAL;
4553
4554 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4555 return -EINVAL;
4556
4557 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4558 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4559
4560 if (!rdev->ops->add_mpath)
4561 return -EOPNOTSUPP;
4562
4563 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4564 return -EOPNOTSUPP;
4565
4566 return rdev_add_mpath(rdev, dev, dst, next_hop);
4567 }
4568
4569 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4570 {
4571 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4572 struct net_device *dev = info->user_ptr[1];
4573 u8 *dst = NULL;
4574
4575 if (info->attrs[NL80211_ATTR_MAC])
4576 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4577
4578 if (!rdev->ops->del_mpath)
4579 return -EOPNOTSUPP;
4580
4581 return rdev_del_mpath(rdev, dev, dst);
4582 }
4583
4584 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4585 {
4586 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4587 struct net_device *dev = info->user_ptr[1];
4588 struct wireless_dev *wdev = dev->ieee80211_ptr;
4589 struct bss_parameters params;
4590 int err;
4591
4592 memset(&params, 0, sizeof(params));
4593 /* default to not changing parameters */
4594 params.use_cts_prot = -1;
4595 params.use_short_preamble = -1;
4596 params.use_short_slot_time = -1;
4597 params.ap_isolate = -1;
4598 params.ht_opmode = -1;
4599 params.p2p_ctwindow = -1;
4600 params.p2p_opp_ps = -1;
4601
4602 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4603 params.use_cts_prot =
4604 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4605 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4606 params.use_short_preamble =
4607 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4608 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4609 params.use_short_slot_time =
4610 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4611 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4612 params.basic_rates =
4613 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4614 params.basic_rates_len =
4615 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4616 }
4617 if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4618 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4619 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4620 params.ht_opmode =
4621 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4622
4623 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4624 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4625 return -EINVAL;
4626 params.p2p_ctwindow =
4627 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4628 if (params.p2p_ctwindow < 0)
4629 return -EINVAL;
4630 if (params.p2p_ctwindow != 0 &&
4631 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4632 return -EINVAL;
4633 }
4634
4635 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4636 u8 tmp;
4637
4638 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4639 return -EINVAL;
4640 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4641 if (tmp > 1)
4642 return -EINVAL;
4643 params.p2p_opp_ps = tmp;
4644 if (params.p2p_opp_ps &&
4645 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4646 return -EINVAL;
4647 }
4648
4649 if (!rdev->ops->change_bss)
4650 return -EOPNOTSUPP;
4651
4652 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4653 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4654 return -EOPNOTSUPP;
4655
4656 wdev_lock(wdev);
4657 err = rdev_change_bss(rdev, dev, &params);
4658 wdev_unlock(wdev);
4659
4660 return err;
4661 }
4662
4663 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4664 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 },
4665 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 },
4666 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 },
4667 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 },
4668 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 },
4669 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 },
4670 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 },
4671 };
4672
4673 static int parse_reg_rule(struct nlattr *tb[],
4674 struct ieee80211_reg_rule *reg_rule)
4675 {
4676 struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4677 struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4678
4679 if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4680 return -EINVAL;
4681 if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4682 return -EINVAL;
4683 if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4684 return -EINVAL;
4685 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4686 return -EINVAL;
4687 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4688 return -EINVAL;
4689
4690 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4691
4692 freq_range->start_freq_khz =
4693 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4694 freq_range->end_freq_khz =
4695 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4696 freq_range->max_bandwidth_khz =
4697 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4698
4699 power_rule->max_eirp =
4700 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4701
4702 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4703 power_rule->max_antenna_gain =
4704 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4705
4706 if (tb[NL80211_ATTR_DFS_CAC_TIME])
4707 reg_rule->dfs_cac_ms =
4708 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
4709
4710 return 0;
4711 }
4712
4713 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4714 {
4715 char *data = NULL;
4716 enum nl80211_user_reg_hint_type user_reg_hint_type;
4717
4718 /*
4719 * You should only get this when cfg80211 hasn't yet initialized
4720 * completely when built-in to the kernel right between the time
4721 * window between nl80211_init() and regulatory_init(), if that is
4722 * even possible.
4723 */
4724 if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4725 return -EINPROGRESS;
4726
4727 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4728 user_reg_hint_type =
4729 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4730 else
4731 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4732
4733 switch (user_reg_hint_type) {
4734 case NL80211_USER_REG_HINT_USER:
4735 case NL80211_USER_REG_HINT_CELL_BASE:
4736 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4737 return -EINVAL;
4738
4739 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4740 return regulatory_hint_user(data, user_reg_hint_type);
4741 case NL80211_USER_REG_HINT_INDOOR:
4742 return regulatory_hint_indoor_user();
4743 default:
4744 return -EINVAL;
4745 }
4746 }
4747
4748 static int nl80211_get_mesh_config(struct sk_buff *skb,
4749 struct genl_info *info)
4750 {
4751 struct cfg80211_registered_device *rdev = info->user_ptr[0];
4752 struct net_device *dev = info->user_ptr[1];
4753 struct wireless_dev *wdev = dev->ieee80211_ptr;
4754 struct mesh_config cur_params;
4755 int err = 0;
4756 void *hdr;
4757 struct nlattr *pinfoattr;
4758 struct sk_buff *msg;
4759
4760 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4761 return -EOPNOTSUPP;
4762
4763 if (!rdev->ops->get_mesh_config)
4764 return -EOPNOTSUPP;
4765
4766 wdev_lock(wdev);
4767 /* If not connected, get default parameters */
4768 if (!wdev->mesh_id_len)
4769 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4770 else
4771 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4772 wdev_unlock(wdev);
4773
4774 if (err)
4775 return err;
4776
4777 /* Draw up a netlink message to send back */
4778 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4779 if (!msg)
4780 return -ENOMEM;
4781 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4782 NL80211_CMD_GET_MESH_CONFIG);
4783 if (!hdr)
4784 goto out;
4785 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4786 if (!pinfoattr)
4787 goto nla_put_failure;
4788 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4789 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4790 cur_params.dot11MeshRetryTimeout) ||
4791 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4792 cur_params.dot11MeshConfirmTimeout) ||
4793 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4794 cur_params.dot11MeshHoldingTimeout) ||
4795 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4796 cur_params.dot11MeshMaxPeerLinks) ||
4797 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4798 cur_params.dot11MeshMaxRetries) ||
4799 nla_put_u8(msg, NL80211_MESHCONF_TTL,
4800 cur_params.dot11MeshTTL) ||
4801 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4802 cur_params.element_ttl) ||
4803 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4804 cur_params.auto_open_plinks) ||
4805 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4806 cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4807 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4808 cur_params.dot11MeshHWMPmaxPREQretries) ||
4809 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4810 cur_params.path_refresh_time) ||
4811 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4812 cur_params.min_discovery_timeout) ||
4813 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4814 cur_params.dot11MeshHWMPactivePathTimeout) ||
4815 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4816 cur_params.dot11MeshHWMPpreqMinInterval) ||
4817 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4818 cur_params.dot11MeshHWMPperrMinInterval) ||
4819 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4820 cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
4821 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
4822 cur_params.dot11MeshHWMPRootMode) ||
4823 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4824 cur_params.dot11MeshHWMPRannInterval) ||
4825 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4826 cur_params.dot11MeshGateAnnouncementProtocol) ||
4827 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
4828 cur_params.dot11MeshForwarding) ||
4829 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
4830 cur_params.rssi_threshold) ||
4831 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
4832 cur_params.ht_opmode) ||
4833 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4834 cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
4835 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4836 cur_params.dot11MeshHWMProotInterval) ||
4837 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4838 cur_params.dot11MeshHWMPconfirmationInterval) ||
4839 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
4840 cur_params.power_mode) ||
4841 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
4842 cur_params.dot11MeshAwakeWindowDuration) ||
4843 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
4844 cur_params.plink_timeout))
4845 goto nla_put_failure;
4846 nla_nest_end(msg, pinfoattr);
4847 genlmsg_end(msg, hdr);
4848 return genlmsg_reply(msg, info);
4849
4850 nla_put_failure:
4851 genlmsg_cancel(msg, hdr);
4852 out:
4853 nlmsg_free(msg);
4854 return -ENOBUFS;
4855 }
4856
4857 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
4858 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
4859 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
4860 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
4861 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
4862 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
4863 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
4864 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
4865 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
4866 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
4867 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
4868 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
4869 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
4870 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
4871 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
4872 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
4873 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
4874 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
4875 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
4876 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
4877 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
4878 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
4879 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
4880 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
4881 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
4882 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
4883 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
4884 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
4885 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
4886 };
4887
4888 static const struct nla_policy
4889 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
4890 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
4891 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
4892 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
4893 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
4894 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
4895 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
4896 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
4897 .len = IEEE80211_MAX_DATA_LEN },
4898 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
4899 };
4900
4901 static int nl80211_parse_mesh_config(struct genl_info *info,
4902 struct mesh_config *cfg,
4903 u32 *mask_out)
4904 {
4905 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
4906 u32 mask = 0;
4907
4908 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
4909 do { \
4910 if (tb[attr]) { \
4911 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \
4912 return -EINVAL; \
4913 cfg->param = fn(tb[attr]); \
4914 mask |= (1 << (attr - 1)); \
4915 } \
4916 } while (0)
4917
4918
4919 if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
4920 return -EINVAL;
4921 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
4922 info->attrs[NL80211_ATTR_MESH_CONFIG],
4923 nl80211_meshconf_params_policy))
4924 return -EINVAL;
4925
4926 /* This makes sure that there aren't more than 32 mesh config
4927 * parameters (otherwise our bitfield scheme would not work.) */
4928 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
4929
4930 /* Fill in the params struct */
4931 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
4932 mask, NL80211_MESHCONF_RETRY_TIMEOUT,
4933 nla_get_u16);
4934 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
4935 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4936 nla_get_u16);
4937 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
4938 mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
4939 nla_get_u16);
4940 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
4941 mask, NL80211_MESHCONF_MAX_PEER_LINKS,
4942 nla_get_u16);
4943 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
4944 mask, NL80211_MESHCONF_MAX_RETRIES,
4945 nla_get_u8);
4946 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
4947 mask, NL80211_MESHCONF_TTL, nla_get_u8);
4948 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
4949 mask, NL80211_MESHCONF_ELEMENT_TTL,
4950 nla_get_u8);
4951 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
4952 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4953 nla_get_u8);
4954 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
4955 1, 255, mask,
4956 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4957 nla_get_u32);
4958 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
4959 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4960 nla_get_u8);
4961 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
4962 mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
4963 nla_get_u32);
4964 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
4965 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4966 nla_get_u16);
4967 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
4968 1, 65535, mask,
4969 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4970 nla_get_u32);
4971 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
4972 1, 65535, mask,
4973 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4974 nla_get_u16);
4975 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
4976 1, 65535, mask,
4977 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4978 nla_get_u16);
4979 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4980 dot11MeshHWMPnetDiameterTraversalTime,
4981 1, 65535, mask,
4982 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4983 nla_get_u16);
4984 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
4985 mask, NL80211_MESHCONF_HWMP_ROOTMODE,
4986 nla_get_u8);
4987 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
4988 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4989 nla_get_u16);
4990 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4991 dot11MeshGateAnnouncementProtocol, 0, 1,
4992 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4993 nla_get_u8);
4994 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
4995 mask, NL80211_MESHCONF_FORWARDING,
4996 nla_get_u8);
4997 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
4998 mask, NL80211_MESHCONF_RSSI_THRESHOLD,
4999 nla_get_s32);
5000 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5001 mask, NL80211_MESHCONF_HT_OPMODE,
5002 nla_get_u16);
5003 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5004 1, 65535, mask,
5005 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5006 nla_get_u32);
5007 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5008 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5009 nla_get_u16);
5010 FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5011 dot11MeshHWMPconfirmationInterval,
5012 1, 65535, mask,
5013 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5014 nla_get_u16);
5015 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5016 NL80211_MESH_POWER_ACTIVE,
5017 NL80211_MESH_POWER_MAX,
5018 mask, NL80211_MESHCONF_POWER_MODE,
5019 nla_get_u32);
5020 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5021 0, 65535, mask,
5022 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5023 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
5024 mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5025 nla_get_u32);
5026 if (mask_out)
5027 *mask_out = mask;
5028
5029 return 0;
5030
5031 #undef FILL_IN_MESH_PARAM_IF_SET
5032 }
5033
5034 static int nl80211_parse_mesh_setup(struct genl_info *info,
5035 struct mesh_setup *setup)
5036 {
5037 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5038 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5039
5040 if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5041 return -EINVAL;
5042 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5043 info->attrs[NL80211_ATTR_MESH_SETUP],
5044 nl80211_mesh_setup_params_policy))
5045 return -EINVAL;
5046
5047 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5048 setup->sync_method =
5049 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5050 IEEE80211_SYNC_METHOD_VENDOR :
5051 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5052
5053 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5054 setup->path_sel_proto =
5055 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5056 IEEE80211_PATH_PROTOCOL_VENDOR :
5057 IEEE80211_PATH_PROTOCOL_HWMP;
5058
5059 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5060 setup->path_metric =
5061 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5062 IEEE80211_PATH_METRIC_VENDOR :
5063 IEEE80211_PATH_METRIC_AIRTIME;
5064
5065
5066 if (tb[NL80211_MESH_SETUP_IE]) {
5067 struct nlattr *ieattr =
5068 tb[NL80211_MESH_SETUP_IE];
5069 if (!is_valid_ie_attr(ieattr))
5070 return -EINVAL;
5071 setup->ie = nla_data(ieattr);
5072 setup->ie_len = nla_len(ieattr);
5073 }
5074 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5075 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5076 return -EINVAL;
5077 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5078 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5079 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5080 if (setup->is_secure)
5081 setup->user_mpm = true;
5082
5083 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5084 if (!setup->user_mpm)
5085 return -EINVAL;
5086 setup->auth_id =
5087 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5088 }
5089
5090 return 0;
5091 }
5092
5093 static int nl80211_update_mesh_config(struct sk_buff *skb,
5094 struct genl_info *info)
5095 {
5096 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5097 struct net_device *dev = info->user_ptr[1];
5098 struct wireless_dev *wdev = dev->ieee80211_ptr;
5099 struct mesh_config cfg;
5100 u32 mask;
5101 int err;
5102
5103 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5104 return -EOPNOTSUPP;
5105
5106 if (!rdev->ops->update_mesh_config)
5107 return -EOPNOTSUPP;
5108
5109 err = nl80211_parse_mesh_config(info, &cfg, &mask);
5110 if (err)
5111 return err;
5112
5113 wdev_lock(wdev);
5114 if (!wdev->mesh_id_len)
5115 err = -ENOLINK;
5116
5117 if (!err)
5118 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5119
5120 wdev_unlock(wdev);
5121
5122 return err;
5123 }
5124
5125 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
5126 {
5127 const struct ieee80211_regdomain *regdom;
5128 struct sk_buff *msg;
5129 void *hdr = NULL;
5130 struct nlattr *nl_reg_rules;
5131 unsigned int i;
5132
5133 if (!cfg80211_regdomain)
5134 return -EINVAL;
5135
5136 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5137 if (!msg)
5138 return -ENOBUFS;
5139
5140 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5141 NL80211_CMD_GET_REG);
5142 if (!hdr)
5143 goto put_failure;
5144
5145 if (reg_last_request_cell_base() &&
5146 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5147 NL80211_USER_REG_HINT_CELL_BASE))
5148 goto nla_put_failure;
5149
5150 rcu_read_lock();
5151 regdom = rcu_dereference(cfg80211_regdomain);
5152
5153 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5154 (regdom->dfs_region &&
5155 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5156 goto nla_put_failure_rcu;
5157
5158 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5159 if (!nl_reg_rules)
5160 goto nla_put_failure_rcu;
5161
5162 for (i = 0; i < regdom->n_reg_rules; i++) {
5163 struct nlattr *nl_reg_rule;
5164 const struct ieee80211_reg_rule *reg_rule;
5165 const struct ieee80211_freq_range *freq_range;
5166 const struct ieee80211_power_rule *power_rule;
5167 unsigned int max_bandwidth_khz;
5168
5169 reg_rule = &regdom->reg_rules[i];
5170 freq_range = &reg_rule->freq_range;
5171 power_rule = &reg_rule->power_rule;
5172
5173 nl_reg_rule = nla_nest_start(msg, i);
5174 if (!nl_reg_rule)
5175 goto nla_put_failure_rcu;
5176
5177 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5178 if (!max_bandwidth_khz)
5179 max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5180 reg_rule);
5181
5182 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5183 reg_rule->flags) ||
5184 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5185 freq_range->start_freq_khz) ||
5186 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5187 freq_range->end_freq_khz) ||
5188 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5189 max_bandwidth_khz) ||
5190 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5191 power_rule->max_antenna_gain) ||
5192 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5193 power_rule->max_eirp) ||
5194 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5195 reg_rule->dfs_cac_ms))
5196 goto nla_put_failure_rcu;
5197
5198 nla_nest_end(msg, nl_reg_rule);
5199 }
5200 rcu_read_unlock();
5201
5202 nla_nest_end(msg, nl_reg_rules);
5203
5204 genlmsg_end(msg, hdr);
5205 return genlmsg_reply(msg, info);
5206
5207 nla_put_failure_rcu:
5208 rcu_read_unlock();
5209 nla_put_failure:
5210 genlmsg_cancel(msg, hdr);
5211 put_failure:
5212 nlmsg_free(msg);
5213 return -EMSGSIZE;
5214 }
5215
5216 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5217 {
5218 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5219 struct nlattr *nl_reg_rule;
5220 char *alpha2 = NULL;
5221 int rem_reg_rules = 0, r = 0;
5222 u32 num_rules = 0, rule_idx = 0, size_of_regd;
5223 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5224 struct ieee80211_regdomain *rd = NULL;
5225
5226 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5227 return -EINVAL;
5228
5229 if (!info->attrs[NL80211_ATTR_REG_RULES])
5230 return -EINVAL;
5231
5232 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5233
5234 if (info->attrs[NL80211_ATTR_DFS_REGION])
5235 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5236
5237 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5238 rem_reg_rules) {
5239 num_rules++;
5240 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5241 return -EINVAL;
5242 }
5243
5244 if (!reg_is_valid_request(alpha2))
5245 return -EINVAL;
5246
5247 size_of_regd = sizeof(struct ieee80211_regdomain) +
5248 num_rules * sizeof(struct ieee80211_reg_rule);
5249
5250 rd = kzalloc(size_of_regd, GFP_KERNEL);
5251 if (!rd)
5252 return -ENOMEM;
5253
5254 rd->n_reg_rules = num_rules;
5255 rd->alpha2[0] = alpha2[0];
5256 rd->alpha2[1] = alpha2[1];
5257
5258 /*
5259 * Disable DFS master mode if the DFS region was
5260 * not supported or known on this kernel.
5261 */
5262 if (reg_supported_dfs_region(dfs_region))
5263 rd->dfs_region = dfs_region;
5264
5265 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5266 rem_reg_rules) {
5267 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5268 nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5269 reg_rule_policy);
5270 if (r)
5271 goto bad_reg;
5272 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5273 if (r)
5274 goto bad_reg;
5275
5276 rule_idx++;
5277
5278 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5279 r = -EINVAL;
5280 goto bad_reg;
5281 }
5282 }
5283
5284 r = set_regdom(rd);
5285 /* set_regdom took ownership */
5286 rd = NULL;
5287
5288 bad_reg:
5289 kfree(rd);
5290 return r;
5291 }
5292
5293 static int validate_scan_freqs(struct nlattr *freqs)
5294 {
5295 struct nlattr *attr1, *attr2;
5296 int n_channels = 0, tmp1, tmp2;
5297
5298 nla_for_each_nested(attr1, freqs, tmp1) {
5299 n_channels++;
5300 /*
5301 * Some hardware has a limited channel list for
5302 * scanning, and it is pretty much nonsensical
5303 * to scan for a channel twice, so disallow that
5304 * and don't require drivers to check that the
5305 * channel list they get isn't longer than what
5306 * they can scan, as long as they can scan all
5307 * the channels they registered at once.
5308 */
5309 nla_for_each_nested(attr2, freqs, tmp2)
5310 if (attr1 != attr2 &&
5311 nla_get_u32(attr1) == nla_get_u32(attr2))
5312 return 0;
5313 }
5314
5315 return n_channels;
5316 }
5317
5318 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5319 {
5320 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5321 struct wireless_dev *wdev = info->user_ptr[1];
5322 struct cfg80211_scan_request *request;
5323 struct nlattr *attr;
5324 struct wiphy *wiphy;
5325 int err, tmp, n_ssids = 0, n_channels, i;
5326 size_t ie_len;
5327
5328 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5329 return -EINVAL;
5330
5331 wiphy = &rdev->wiphy;
5332
5333 if (!rdev->ops->scan)
5334 return -EOPNOTSUPP;
5335
5336 if (rdev->scan_req || rdev->scan_msg) {
5337 err = -EBUSY;
5338 goto unlock;
5339 }
5340
5341 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5342 n_channels = validate_scan_freqs(
5343 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5344 if (!n_channels) {
5345 err = -EINVAL;
5346 goto unlock;
5347 }
5348 } else {
5349 n_channels = ieee80211_get_num_supported_channels(wiphy);
5350 }
5351
5352 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5353 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5354 n_ssids++;
5355
5356 if (n_ssids > wiphy->max_scan_ssids) {
5357 err = -EINVAL;
5358 goto unlock;
5359 }
5360
5361 if (info->attrs[NL80211_ATTR_IE])
5362 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5363 else
5364 ie_len = 0;
5365
5366 if (ie_len > wiphy->max_scan_ie_len) {
5367 err = -EINVAL;
5368 goto unlock;
5369 }
5370
5371 request = kzalloc(sizeof(*request)
5372 + sizeof(*request->ssids) * n_ssids
5373 + sizeof(*request->channels) * n_channels
5374 + ie_len, GFP_KERNEL);
5375 if (!request) {
5376 err = -ENOMEM;
5377 goto unlock;
5378 }
5379
5380 if (n_ssids)
5381 request->ssids = (void *)&request->channels[n_channels];
5382 request->n_ssids = n_ssids;
5383 if (ie_len) {
5384 if (request->ssids)
5385 request->ie = (void *)(request->ssids + n_ssids);
5386 else
5387 request->ie = (void *)(request->channels + n_channels);
5388 }
5389
5390 i = 0;
5391 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5392 /* user specified, bail out if channel not found */
5393 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5394 struct ieee80211_channel *chan;
5395
5396 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5397
5398 if (!chan) {
5399 err = -EINVAL;
5400 goto out_free;
5401 }
5402
5403 /* ignore disabled channels */
5404 if (chan->flags & IEEE80211_CHAN_DISABLED)
5405 continue;
5406
5407 request->channels[i] = chan;
5408 i++;
5409 }
5410 } else {
5411 enum ieee80211_band band;
5412
5413 /* all channels */
5414 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5415 int j;
5416 if (!wiphy->bands[band])
5417 continue;
5418 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5419 struct ieee80211_channel *chan;
5420
5421 chan = &wiphy->bands[band]->channels[j];
5422
5423 if (chan->flags & IEEE80211_CHAN_DISABLED)
5424 continue;
5425
5426 request->channels[i] = chan;
5427 i++;
5428 }
5429 }
5430 }
5431
5432 if (!i) {
5433 err = -EINVAL;
5434 goto out_free;
5435 }
5436
5437 request->n_channels = i;
5438
5439 i = 0;
5440 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5441 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5442 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5443 err = -EINVAL;
5444 goto out_free;
5445 }
5446 request->ssids[i].ssid_len = nla_len(attr);
5447 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5448 i++;
5449 }
5450 }
5451
5452 if (info->attrs[NL80211_ATTR_IE]) {
5453 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5454 memcpy((void *)request->ie,
5455 nla_data(info->attrs[NL80211_ATTR_IE]),
5456 request->ie_len);
5457 }
5458
5459 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5460 if (wiphy->bands[i])
5461 request->rates[i] =
5462 (1 << wiphy->bands[i]->n_bitrates) - 1;
5463
5464 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5465 nla_for_each_nested(attr,
5466 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5467 tmp) {
5468 enum ieee80211_band band = nla_type(attr);
5469
5470 if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5471 err = -EINVAL;
5472 goto out_free;
5473 }
5474
5475 if (!wiphy->bands[band])
5476 continue;
5477
5478 err = ieee80211_get_ratemask(wiphy->bands[band],
5479 nla_data(attr),
5480 nla_len(attr),
5481 &request->rates[band]);
5482 if (err)
5483 goto out_free;
5484 }
5485 }
5486
5487 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5488 request->flags = nla_get_u32(
5489 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5490 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5491 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5492 err = -EOPNOTSUPP;
5493 goto out_free;
5494 }
5495 }
5496
5497 request->no_cck =
5498 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5499
5500 request->wdev = wdev;
5501 request->wiphy = &rdev->wiphy;
5502 request->scan_start = jiffies;
5503
5504 rdev->scan_req = request;
5505 err = rdev_scan(rdev, request);
5506
5507 if (!err) {
5508 nl80211_send_scan_start(rdev, wdev);
5509 if (wdev->netdev)
5510 dev_hold(wdev->netdev);
5511 } else {
5512 out_free:
5513 rdev->scan_req = NULL;
5514 kfree(request);
5515 }
5516
5517 unlock:
5518 return err;
5519 }
5520
5521 static int nl80211_start_sched_scan(struct sk_buff *skb,
5522 struct genl_info *info)
5523 {
5524 struct cfg80211_sched_scan_request *request;
5525 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5526 struct net_device *dev = info->user_ptr[1];
5527 struct nlattr *attr;
5528 struct wiphy *wiphy;
5529 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5530 u32 interval;
5531 enum ieee80211_band band;
5532 size_t ie_len;
5533 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5534 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
5535
5536 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5537 !rdev->ops->sched_scan_start)
5538 return -EOPNOTSUPP;
5539
5540 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5541 return -EINVAL;
5542
5543 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5544 return -EINVAL;
5545
5546 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5547 if (interval == 0)
5548 return -EINVAL;
5549
5550 wiphy = &rdev->wiphy;
5551
5552 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5553 n_channels = validate_scan_freqs(
5554 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5555 if (!n_channels)
5556 return -EINVAL;
5557 } else {
5558 n_channels = ieee80211_get_num_supported_channels(wiphy);
5559 }
5560
5561 if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5562 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5563 tmp)
5564 n_ssids++;
5565
5566 if (n_ssids > wiphy->max_sched_scan_ssids)
5567 return -EINVAL;
5568
5569 /*
5570 * First, count the number of 'real' matchsets. Due to an issue with
5571 * the old implementation, matchsets containing only the RSSI attribute
5572 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
5573 * RSSI for all matchsets, rather than their own matchset for reporting
5574 * all APs with a strong RSSI. This is needed to be compatible with
5575 * older userspace that treated a matchset with only the RSSI as the
5576 * global RSSI for all other matchsets - if there are other matchsets.
5577 */
5578 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5579 nla_for_each_nested(attr,
5580 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5581 tmp) {
5582 struct nlattr *rssi;
5583
5584 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5585 nla_data(attr), nla_len(attr),
5586 nl80211_match_policy);
5587 if (err)
5588 return err;
5589 /* add other standalone attributes here */
5590 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
5591 n_match_sets++;
5592 continue;
5593 }
5594 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5595 if (rssi)
5596 default_match_rssi = nla_get_s32(rssi);
5597 }
5598 }
5599
5600 /* However, if there's no other matchset, add the RSSI one */
5601 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
5602 n_match_sets = 1;
5603
5604 if (n_match_sets > wiphy->max_match_sets)
5605 return -EINVAL;
5606
5607 if (info->attrs[NL80211_ATTR_IE])
5608 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5609 else
5610 ie_len = 0;
5611
5612 if (ie_len > wiphy->max_sched_scan_ie_len)
5613 return -EINVAL;
5614
5615 if (rdev->sched_scan_req) {
5616 err = -EINPROGRESS;
5617 goto out;
5618 }
5619
5620 request = kzalloc(sizeof(*request)
5621 + sizeof(*request->ssids) * n_ssids
5622 + sizeof(*request->match_sets) * n_match_sets
5623 + sizeof(*request->channels) * n_channels
5624 + ie_len, GFP_KERNEL);
5625 if (!request) {
5626 err = -ENOMEM;
5627 goto out;
5628 }
5629
5630 if (n_ssids)
5631 request->ssids = (void *)&request->channels[n_channels];
5632 request->n_ssids = n_ssids;
5633 if (ie_len) {
5634 if (request->ssids)
5635 request->ie = (void *)(request->ssids + n_ssids);
5636 else
5637 request->ie = (void *)(request->channels + n_channels);
5638 }
5639
5640 if (n_match_sets) {
5641 if (request->ie)
5642 request->match_sets = (void *)(request->ie + ie_len);
5643 else if (request->ssids)
5644 request->match_sets =
5645 (void *)(request->ssids + n_ssids);
5646 else
5647 request->match_sets =
5648 (void *)(request->channels + n_channels);
5649 }
5650 request->n_match_sets = n_match_sets;
5651
5652 i = 0;
5653 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5654 /* user specified, bail out if channel not found */
5655 nla_for_each_nested(attr,
5656 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5657 tmp) {
5658 struct ieee80211_channel *chan;
5659
5660 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5661
5662 if (!chan) {
5663 err = -EINVAL;
5664 goto out_free;
5665 }
5666
5667 /* ignore disabled channels */
5668 if (chan->flags & IEEE80211_CHAN_DISABLED)
5669 continue;
5670
5671 request->channels[i] = chan;
5672 i++;
5673 }
5674 } else {
5675 /* all channels */
5676 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5677 int j;
5678 if (!wiphy->bands[band])
5679 continue;
5680 for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5681 struct ieee80211_channel *chan;
5682
5683 chan = &wiphy->bands[band]->channels[j];
5684
5685 if (chan->flags & IEEE80211_CHAN_DISABLED)
5686 continue;
5687
5688 request->channels[i] = chan;
5689 i++;
5690 }
5691 }
5692 }
5693
5694 if (!i) {
5695 err = -EINVAL;
5696 goto out_free;
5697 }
5698
5699 request->n_channels = i;
5700
5701 i = 0;
5702 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5703 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5704 tmp) {
5705 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5706 err = -EINVAL;
5707 goto out_free;
5708 }
5709 request->ssids[i].ssid_len = nla_len(attr);
5710 memcpy(request->ssids[i].ssid, nla_data(attr),
5711 nla_len(attr));
5712 i++;
5713 }
5714 }
5715
5716 i = 0;
5717 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5718 nla_for_each_nested(attr,
5719 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5720 tmp) {
5721 struct nlattr *ssid, *rssi;
5722
5723 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5724 nla_data(attr), nla_len(attr),
5725 nl80211_match_policy);
5726 if (err)
5727 goto out_free;
5728 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5729 if (ssid) {
5730 if (WARN_ON(i >= n_match_sets)) {
5731 /* this indicates a programming error,
5732 * the loop above should have verified
5733 * things properly
5734 */
5735 err = -EINVAL;
5736 goto out_free;
5737 }
5738
5739 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5740 err = -EINVAL;
5741 goto out_free;
5742 }
5743 memcpy(request->match_sets[i].ssid.ssid,
5744 nla_data(ssid), nla_len(ssid));
5745 request->match_sets[i].ssid.ssid_len =
5746 nla_len(ssid);
5747 /* special attribute - old implemenation w/a */
5748 request->match_sets[i].rssi_thold =
5749 default_match_rssi;
5750 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5751 if (rssi)
5752 request->match_sets[i].rssi_thold =
5753 nla_get_s32(rssi);
5754 }
5755 i++;
5756 }
5757
5758 /* there was no other matchset, so the RSSI one is alone */
5759 if (i == 0)
5760 request->match_sets[0].rssi_thold = default_match_rssi;
5761
5762 request->min_rssi_thold = INT_MAX;
5763 for (i = 0; i < n_match_sets; i++)
5764 request->min_rssi_thold =
5765 min(request->match_sets[i].rssi_thold,
5766 request->min_rssi_thold);
5767 } else {
5768 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
5769 }
5770
5771 if (ie_len) {
5772 request->ie_len = ie_len;
5773 memcpy((void *)request->ie,
5774 nla_data(info->attrs[NL80211_ATTR_IE]),
5775 request->ie_len);
5776 }
5777
5778 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5779 request->flags = nla_get_u32(
5780 info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5781 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5782 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5783 err = -EOPNOTSUPP;
5784 goto out_free;
5785 }
5786 }
5787
5788 request->dev = dev;
5789 request->wiphy = &rdev->wiphy;
5790 request->interval = interval;
5791 request->scan_start = jiffies;
5792
5793 err = rdev_sched_scan_start(rdev, dev, request);
5794 if (!err) {
5795 rdev->sched_scan_req = request;
5796 nl80211_send_sched_scan(rdev, dev,
5797 NL80211_CMD_START_SCHED_SCAN);
5798 goto out;
5799 }
5800
5801 out_free:
5802 kfree(request);
5803 out:
5804 return err;
5805 }
5806
5807 static int nl80211_stop_sched_scan(struct sk_buff *skb,
5808 struct genl_info *info)
5809 {
5810 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5811
5812 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5813 !rdev->ops->sched_scan_stop)
5814 return -EOPNOTSUPP;
5815
5816 return __cfg80211_stop_sched_scan(rdev, false);
5817 }
5818
5819 static int nl80211_start_radar_detection(struct sk_buff *skb,
5820 struct genl_info *info)
5821 {
5822 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5823 struct net_device *dev = info->user_ptr[1];
5824 struct wireless_dev *wdev = dev->ieee80211_ptr;
5825 struct cfg80211_chan_def chandef;
5826 enum nl80211_dfs_regions dfs_region;
5827 unsigned int cac_time_ms;
5828 int err;
5829
5830 dfs_region = reg_get_dfs_region(wdev->wiphy);
5831 if (dfs_region == NL80211_DFS_UNSET)
5832 return -EINVAL;
5833
5834 err = nl80211_parse_chandef(rdev, info, &chandef);
5835 if (err)
5836 return err;
5837
5838 if (netif_carrier_ok(dev))
5839 return -EBUSY;
5840
5841 if (wdev->cac_started)
5842 return -EBUSY;
5843
5844 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
5845 wdev->iftype);
5846 if (err < 0)
5847 return err;
5848
5849 if (err == 0)
5850 return -EINVAL;
5851
5852 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
5853 return -EINVAL;
5854
5855 if (!rdev->ops->start_radar_detection)
5856 return -EOPNOTSUPP;
5857
5858 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
5859 if (WARN_ON(!cac_time_ms))
5860 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
5861
5862 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
5863 cac_time_ms);
5864 if (!err) {
5865 wdev->chandef = chandef;
5866 wdev->cac_started = true;
5867 wdev->cac_start_time = jiffies;
5868 wdev->cac_time_ms = cac_time_ms;
5869 }
5870 return err;
5871 }
5872
5873 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
5874 {
5875 struct cfg80211_registered_device *rdev = info->user_ptr[0];
5876 struct net_device *dev = info->user_ptr[1];
5877 struct wireless_dev *wdev = dev->ieee80211_ptr;
5878 struct cfg80211_csa_settings params;
5879 /* csa_attrs is defined static to avoid waste of stack size - this
5880 * function is called under RTNL lock, so this should not be a problem.
5881 */
5882 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
5883 u8 radar_detect_width = 0;
5884 int err;
5885 bool need_new_beacon = false;
5886 int len, i;
5887
5888 if (!rdev->ops->channel_switch ||
5889 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
5890 return -EOPNOTSUPP;
5891
5892 switch (dev->ieee80211_ptr->iftype) {
5893 case NL80211_IFTYPE_AP:
5894 case NL80211_IFTYPE_P2P_GO:
5895 need_new_beacon = true;
5896
5897 /* useless if AP is not running */
5898 if (!wdev->beacon_interval)
5899 return -ENOTCONN;
5900 break;
5901 case NL80211_IFTYPE_ADHOC:
5902 if (!wdev->ssid_len)
5903 return -ENOTCONN;
5904 break;
5905 case NL80211_IFTYPE_MESH_POINT:
5906 if (!wdev->mesh_id_len)
5907 return -ENOTCONN;
5908 break;
5909 default:
5910 return -EOPNOTSUPP;
5911 }
5912
5913 memset(&params, 0, sizeof(params));
5914
5915 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5916 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
5917 return -EINVAL;
5918
5919 /* only important for AP, IBSS and mesh create IEs internally */
5920 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
5921 return -EINVAL;
5922
5923 params.count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
5924
5925 if (!need_new_beacon)
5926 goto skip_beacons;
5927
5928 err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
5929 if (err)
5930 return err;
5931
5932 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
5933 info->attrs[NL80211_ATTR_CSA_IES],
5934 nl80211_policy);
5935 if (err)
5936 return err;
5937
5938 err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
5939 if (err)
5940 return err;
5941
5942 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
5943 return -EINVAL;
5944
5945 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
5946 if (!len || (len % sizeof(u16)))
5947 return -EINVAL;
5948
5949 params.n_counter_offsets_beacon = len / sizeof(u16);
5950 if (rdev->wiphy.max_num_csa_counters &&
5951 (params.n_counter_offsets_beacon >
5952 rdev->wiphy.max_num_csa_counters))
5953 return -EINVAL;
5954
5955 params.counter_offsets_beacon =
5956 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
5957
5958 /* sanity checks - counters should fit and be the same */
5959 for (i = 0; i < params.n_counter_offsets_beacon; i++) {
5960 u16 offset = params.counter_offsets_beacon[i];
5961
5962 if (offset >= params.beacon_csa.tail_len)
5963 return -EINVAL;
5964
5965 if (params.beacon_csa.tail[offset] != params.count)
5966 return -EINVAL;
5967 }
5968
5969 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
5970 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
5971 if (!len || (len % sizeof(u16)))
5972 return -EINVAL;
5973
5974 params.n_counter_offsets_presp = len / sizeof(u16);
5975 if (rdev->wiphy.max_num_csa_counters &&
5976 (params.n_counter_offsets_beacon >
5977 rdev->wiphy.max_num_csa_counters))
5978 return -EINVAL;
5979
5980 params.counter_offsets_presp =
5981 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
5982
5983 /* sanity checks - counters should fit and be the same */
5984 for (i = 0; i < params.n_counter_offsets_presp; i++) {
5985 u16 offset = params.counter_offsets_presp[i];
5986
5987 if (offset >= params.beacon_csa.probe_resp_len)
5988 return -EINVAL;
5989
5990 if (params.beacon_csa.probe_resp[offset] !=
5991 params.count)
5992 return -EINVAL;
5993 }
5994 }
5995
5996 skip_beacons:
5997 err = nl80211_parse_chandef(rdev, info, &params.chandef);
5998 if (err)
5999 return err;
6000
6001 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
6002 wdev->iftype))
6003 return -EINVAL;
6004
6005 err = cfg80211_chandef_dfs_required(wdev->wiphy,
6006 &params.chandef,
6007 wdev->iftype);
6008 if (err < 0)
6009 return err;
6010
6011 if (err > 0) {
6012 radar_detect_width = BIT(params.chandef.width);
6013 params.radar_required = true;
6014 }
6015
6016 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6017 params.block_tx = true;
6018
6019 wdev_lock(wdev);
6020 err = rdev_channel_switch(rdev, dev, &params);
6021 wdev_unlock(wdev);
6022
6023 return err;
6024 }
6025
6026 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6027 u32 seq, int flags,
6028 struct cfg80211_registered_device *rdev,
6029 struct wireless_dev *wdev,
6030 struct cfg80211_internal_bss *intbss)
6031 {
6032 struct cfg80211_bss *res = &intbss->pub;
6033 const struct cfg80211_bss_ies *ies;
6034 void *hdr;
6035 struct nlattr *bss;
6036 bool tsf = false;
6037
6038 ASSERT_WDEV_LOCK(wdev);
6039
6040 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6041 NL80211_CMD_NEW_SCAN_RESULTS);
6042 if (!hdr)
6043 return -1;
6044
6045 genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6046
6047 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6048 goto nla_put_failure;
6049 if (wdev->netdev &&
6050 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6051 goto nla_put_failure;
6052 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6053 goto nla_put_failure;
6054
6055 bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6056 if (!bss)
6057 goto nla_put_failure;
6058 if ((!is_zero_ether_addr(res->bssid) &&
6059 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6060 goto nla_put_failure;
6061
6062 rcu_read_lock();
6063 ies = rcu_dereference(res->ies);
6064 if (ies) {
6065 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6066 goto fail_unlock_rcu;
6067 tsf = true;
6068 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6069 ies->len, ies->data))
6070 goto fail_unlock_rcu;
6071 }
6072 ies = rcu_dereference(res->beacon_ies);
6073 if (ies) {
6074 if (!tsf && nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6075 goto fail_unlock_rcu;
6076 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6077 ies->len, ies->data))
6078 goto fail_unlock_rcu;
6079 }
6080 rcu_read_unlock();
6081
6082 if (res->beacon_interval &&
6083 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6084 goto nla_put_failure;
6085 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6086 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6087 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6088 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6089 jiffies_to_msecs(jiffies - intbss->ts)))
6090 goto nla_put_failure;
6091
6092 switch (rdev->wiphy.signal_type) {
6093 case CFG80211_SIGNAL_TYPE_MBM:
6094 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6095 goto nla_put_failure;
6096 break;
6097 case CFG80211_SIGNAL_TYPE_UNSPEC:
6098 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6099 goto nla_put_failure;
6100 break;
6101 default:
6102 break;
6103 }
6104
6105 switch (wdev->iftype) {
6106 case NL80211_IFTYPE_P2P_CLIENT:
6107 case NL80211_IFTYPE_STATION:
6108 if (intbss == wdev->current_bss &&
6109 nla_put_u32(msg, NL80211_BSS_STATUS,
6110 NL80211_BSS_STATUS_ASSOCIATED))
6111 goto nla_put_failure;
6112 break;
6113 case NL80211_IFTYPE_ADHOC:
6114 if (intbss == wdev->current_bss &&
6115 nla_put_u32(msg, NL80211_BSS_STATUS,
6116 NL80211_BSS_STATUS_IBSS_JOINED))
6117 goto nla_put_failure;
6118 break;
6119 default:
6120 break;
6121 }
6122
6123 nla_nest_end(msg, bss);
6124
6125 return genlmsg_end(msg, hdr);
6126
6127 fail_unlock_rcu:
6128 rcu_read_unlock();
6129 nla_put_failure:
6130 genlmsg_cancel(msg, hdr);
6131 return -EMSGSIZE;
6132 }
6133
6134 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6135 {
6136 struct cfg80211_registered_device *rdev;
6137 struct cfg80211_internal_bss *scan;
6138 struct wireless_dev *wdev;
6139 int start = cb->args[2], idx = 0;
6140 int err;
6141
6142 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6143 if (err)
6144 return err;
6145
6146 wdev_lock(wdev);
6147 spin_lock_bh(&rdev->bss_lock);
6148 cfg80211_bss_expire(rdev);
6149
6150 cb->seq = rdev->bss_generation;
6151
6152 list_for_each_entry(scan, &rdev->bss_list, list) {
6153 if (++idx <= start)
6154 continue;
6155 if (nl80211_send_bss(skb, cb,
6156 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6157 rdev, wdev, scan) < 0) {
6158 idx--;
6159 break;
6160 }
6161 }
6162
6163 spin_unlock_bh(&rdev->bss_lock);
6164 wdev_unlock(wdev);
6165
6166 cb->args[2] = idx;
6167 nl80211_finish_wdev_dump(rdev);
6168
6169 return skb->len;
6170 }
6171
6172 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6173 int flags, struct net_device *dev,
6174 struct survey_info *survey)
6175 {
6176 void *hdr;
6177 struct nlattr *infoattr;
6178
6179 hdr = nl80211hdr_put(msg, portid, seq, flags,
6180 NL80211_CMD_NEW_SURVEY_RESULTS);
6181 if (!hdr)
6182 return -ENOMEM;
6183
6184 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6185 goto nla_put_failure;
6186
6187 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6188 if (!infoattr)
6189 goto nla_put_failure;
6190
6191 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6192 survey->channel->center_freq))
6193 goto nla_put_failure;
6194
6195 if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6196 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6197 goto nla_put_failure;
6198 if ((survey->filled & SURVEY_INFO_IN_USE) &&
6199 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6200 goto nla_put_failure;
6201 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
6202 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
6203 survey->channel_time))
6204 goto nla_put_failure;
6205 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
6206 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
6207 survey->channel_time_busy))
6208 goto nla_put_failure;
6209 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
6210 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
6211 survey->channel_time_ext_busy))
6212 goto nla_put_failure;
6213 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
6214 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
6215 survey->channel_time_rx))
6216 goto nla_put_failure;
6217 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
6218 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
6219 survey->channel_time_tx))
6220 goto nla_put_failure;
6221
6222 nla_nest_end(msg, infoattr);
6223
6224 return genlmsg_end(msg, hdr);
6225
6226 nla_put_failure:
6227 genlmsg_cancel(msg, hdr);
6228 return -EMSGSIZE;
6229 }
6230
6231 static int nl80211_dump_survey(struct sk_buff *skb,
6232 struct netlink_callback *cb)
6233 {
6234 struct survey_info survey;
6235 struct cfg80211_registered_device *rdev;
6236 struct wireless_dev *wdev;
6237 int survey_idx = cb->args[2];
6238 int res;
6239
6240 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6241 if (res)
6242 return res;
6243
6244 if (!wdev->netdev) {
6245 res = -EINVAL;
6246 goto out_err;
6247 }
6248
6249 if (!rdev->ops->dump_survey) {
6250 res = -EOPNOTSUPP;
6251 goto out_err;
6252 }
6253
6254 while (1) {
6255 struct ieee80211_channel *chan;
6256
6257 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6258 if (res == -ENOENT)
6259 break;
6260 if (res)
6261 goto out_err;
6262
6263 /* Survey without a channel doesn't make sense */
6264 if (!survey.channel) {
6265 res = -EINVAL;
6266 goto out;
6267 }
6268
6269 chan = ieee80211_get_channel(&rdev->wiphy,
6270 survey.channel->center_freq);
6271 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
6272 survey_idx++;
6273 continue;
6274 }
6275
6276 if (nl80211_send_survey(skb,
6277 NETLINK_CB(cb->skb).portid,
6278 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6279 wdev->netdev, &survey) < 0)
6280 goto out;
6281 survey_idx++;
6282 }
6283
6284 out:
6285 cb->args[2] = survey_idx;
6286 res = skb->len;
6287 out_err:
6288 nl80211_finish_wdev_dump(rdev);
6289 return res;
6290 }
6291
6292 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6293 {
6294 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6295 NL80211_WPA_VERSION_2));
6296 }
6297
6298 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6299 {
6300 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6301 struct net_device *dev = info->user_ptr[1];
6302 struct ieee80211_channel *chan;
6303 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6304 int err, ssid_len, ie_len = 0, sae_data_len = 0;
6305 enum nl80211_auth_type auth_type;
6306 struct key_parse key;
6307 bool local_state_change;
6308
6309 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6310 return -EINVAL;
6311
6312 if (!info->attrs[NL80211_ATTR_MAC])
6313 return -EINVAL;
6314
6315 if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6316 return -EINVAL;
6317
6318 if (!info->attrs[NL80211_ATTR_SSID])
6319 return -EINVAL;
6320
6321 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6322 return -EINVAL;
6323
6324 err = nl80211_parse_key(info, &key);
6325 if (err)
6326 return err;
6327
6328 if (key.idx >= 0) {
6329 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6330 return -EINVAL;
6331 if (!key.p.key || !key.p.key_len)
6332 return -EINVAL;
6333 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6334 key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6335 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6336 key.p.key_len != WLAN_KEY_LEN_WEP104))
6337 return -EINVAL;
6338 if (key.idx > 4)
6339 return -EINVAL;
6340 } else {
6341 key.p.key_len = 0;
6342 key.p.key = NULL;
6343 }
6344
6345 if (key.idx >= 0) {
6346 int i;
6347 bool ok = false;
6348 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6349 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6350 ok = true;
6351 break;
6352 }
6353 }
6354 if (!ok)
6355 return -EINVAL;
6356 }
6357
6358 if (!rdev->ops->auth)
6359 return -EOPNOTSUPP;
6360
6361 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6362 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6363 return -EOPNOTSUPP;
6364
6365 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6366 chan = nl80211_get_valid_chan(&rdev->wiphy,
6367 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6368 if (!chan)
6369 return -EINVAL;
6370
6371 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6372 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6373
6374 if (info->attrs[NL80211_ATTR_IE]) {
6375 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6376 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6377 }
6378
6379 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6380 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6381 return -EINVAL;
6382
6383 if (auth_type == NL80211_AUTHTYPE_SAE &&
6384 !info->attrs[NL80211_ATTR_SAE_DATA])
6385 return -EINVAL;
6386
6387 if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6388 if (auth_type != NL80211_AUTHTYPE_SAE)
6389 return -EINVAL;
6390 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6391 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6392 /* need to include at least Auth Transaction and Status Code */
6393 if (sae_data_len < 4)
6394 return -EINVAL;
6395 }
6396
6397 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6398
6399 /*
6400 * Since we no longer track auth state, ignore
6401 * requests to only change local state.
6402 */
6403 if (local_state_change)
6404 return 0;
6405
6406 wdev_lock(dev->ieee80211_ptr);
6407 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6408 ssid, ssid_len, ie, ie_len,
6409 key.p.key, key.p.key_len, key.idx,
6410 sae_data, sae_data_len);
6411 wdev_unlock(dev->ieee80211_ptr);
6412 return err;
6413 }
6414
6415 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6416 struct genl_info *info,
6417 struct cfg80211_crypto_settings *settings,
6418 int cipher_limit)
6419 {
6420 memset(settings, 0, sizeof(*settings));
6421
6422 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6423
6424 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6425 u16 proto;
6426 proto = nla_get_u16(
6427 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6428 settings->control_port_ethertype = cpu_to_be16(proto);
6429 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6430 proto != ETH_P_PAE)
6431 return -EINVAL;
6432 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6433 settings->control_port_no_encrypt = true;
6434 } else
6435 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6436
6437 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6438 void *data;
6439 int len, i;
6440
6441 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6442 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6443 settings->n_ciphers_pairwise = len / sizeof(u32);
6444
6445 if (len % sizeof(u32))
6446 return -EINVAL;
6447
6448 if (settings->n_ciphers_pairwise > cipher_limit)
6449 return -EINVAL;
6450
6451 memcpy(settings->ciphers_pairwise, data, len);
6452
6453 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6454 if (!cfg80211_supported_cipher_suite(
6455 &rdev->wiphy,
6456 settings->ciphers_pairwise[i]))
6457 return -EINVAL;
6458 }
6459
6460 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6461 settings->cipher_group =
6462 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6463 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6464 settings->cipher_group))
6465 return -EINVAL;
6466 }
6467
6468 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6469 settings->wpa_versions =
6470 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6471 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6472 return -EINVAL;
6473 }
6474
6475 if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6476 void *data;
6477 int len;
6478
6479 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6480 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6481 settings->n_akm_suites = len / sizeof(u32);
6482
6483 if (len % sizeof(u32))
6484 return -EINVAL;
6485
6486 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6487 return -EINVAL;
6488
6489 memcpy(settings->akm_suites, data, len);
6490 }
6491
6492 return 0;
6493 }
6494
6495 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6496 {
6497 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6498 struct net_device *dev = info->user_ptr[1];
6499 struct ieee80211_channel *chan;
6500 struct cfg80211_assoc_request req = {};
6501 const u8 *bssid, *ssid;
6502 int err, ssid_len = 0;
6503
6504 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6505 return -EINVAL;
6506
6507 if (!info->attrs[NL80211_ATTR_MAC] ||
6508 !info->attrs[NL80211_ATTR_SSID] ||
6509 !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6510 return -EINVAL;
6511
6512 if (!rdev->ops->assoc)
6513 return -EOPNOTSUPP;
6514
6515 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6516 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6517 return -EOPNOTSUPP;
6518
6519 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6520
6521 chan = nl80211_get_valid_chan(&rdev->wiphy,
6522 info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6523 if (!chan)
6524 return -EINVAL;
6525
6526 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6527 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6528
6529 if (info->attrs[NL80211_ATTR_IE]) {
6530 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6531 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6532 }
6533
6534 if (info->attrs[NL80211_ATTR_USE_MFP]) {
6535 enum nl80211_mfp mfp =
6536 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6537 if (mfp == NL80211_MFP_REQUIRED)
6538 req.use_mfp = true;
6539 else if (mfp != NL80211_MFP_NO)
6540 return -EINVAL;
6541 }
6542
6543 if (info->attrs[NL80211_ATTR_PREV_BSSID])
6544 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6545
6546 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6547 req.flags |= ASSOC_REQ_DISABLE_HT;
6548
6549 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6550 memcpy(&req.ht_capa_mask,
6551 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6552 sizeof(req.ht_capa_mask));
6553
6554 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6555 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6556 return -EINVAL;
6557 memcpy(&req.ht_capa,
6558 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6559 sizeof(req.ht_capa));
6560 }
6561
6562 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6563 req.flags |= ASSOC_REQ_DISABLE_VHT;
6564
6565 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6566 memcpy(&req.vht_capa_mask,
6567 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6568 sizeof(req.vht_capa_mask));
6569
6570 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6571 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6572 return -EINVAL;
6573 memcpy(&req.vht_capa,
6574 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6575 sizeof(req.vht_capa));
6576 }
6577
6578 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6579 if (!err) {
6580 wdev_lock(dev->ieee80211_ptr);
6581 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6582 ssid, ssid_len, &req);
6583 wdev_unlock(dev->ieee80211_ptr);
6584 }
6585
6586 return err;
6587 }
6588
6589 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6590 {
6591 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6592 struct net_device *dev = info->user_ptr[1];
6593 const u8 *ie = NULL, *bssid;
6594 int ie_len = 0, err;
6595 u16 reason_code;
6596 bool local_state_change;
6597
6598 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6599 return -EINVAL;
6600
6601 if (!info->attrs[NL80211_ATTR_MAC])
6602 return -EINVAL;
6603
6604 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6605 return -EINVAL;
6606
6607 if (!rdev->ops->deauth)
6608 return -EOPNOTSUPP;
6609
6610 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6611 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6612 return -EOPNOTSUPP;
6613
6614 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6615
6616 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6617 if (reason_code == 0) {
6618 /* Reason Code 0 is reserved */
6619 return -EINVAL;
6620 }
6621
6622 if (info->attrs[NL80211_ATTR_IE]) {
6623 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6624 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6625 }
6626
6627 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6628
6629 wdev_lock(dev->ieee80211_ptr);
6630 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6631 local_state_change);
6632 wdev_unlock(dev->ieee80211_ptr);
6633 return err;
6634 }
6635
6636 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6637 {
6638 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6639 struct net_device *dev = info->user_ptr[1];
6640 const u8 *ie = NULL, *bssid;
6641 int ie_len = 0, err;
6642 u16 reason_code;
6643 bool local_state_change;
6644
6645 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6646 return -EINVAL;
6647
6648 if (!info->attrs[NL80211_ATTR_MAC])
6649 return -EINVAL;
6650
6651 if (!info->attrs[NL80211_ATTR_REASON_CODE])
6652 return -EINVAL;
6653
6654 if (!rdev->ops->disassoc)
6655 return -EOPNOTSUPP;
6656
6657 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6658 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6659 return -EOPNOTSUPP;
6660
6661 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6662
6663 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6664 if (reason_code == 0) {
6665 /* Reason Code 0 is reserved */
6666 return -EINVAL;
6667 }
6668
6669 if (info->attrs[NL80211_ATTR_IE]) {
6670 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6671 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6672 }
6673
6674 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6675
6676 wdev_lock(dev->ieee80211_ptr);
6677 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6678 local_state_change);
6679 wdev_unlock(dev->ieee80211_ptr);
6680 return err;
6681 }
6682
6683 static bool
6684 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6685 int mcast_rate[IEEE80211_NUM_BANDS],
6686 int rateval)
6687 {
6688 struct wiphy *wiphy = &rdev->wiphy;
6689 bool found = false;
6690 int band, i;
6691
6692 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6693 struct ieee80211_supported_band *sband;
6694
6695 sband = wiphy->bands[band];
6696 if (!sband)
6697 continue;
6698
6699 for (i = 0; i < sband->n_bitrates; i++) {
6700 if (sband->bitrates[i].bitrate == rateval) {
6701 mcast_rate[band] = i + 1;
6702 found = true;
6703 break;
6704 }
6705 }
6706 }
6707
6708 return found;
6709 }
6710
6711 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
6712 {
6713 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6714 struct net_device *dev = info->user_ptr[1];
6715 struct cfg80211_ibss_params ibss;
6716 struct wiphy *wiphy;
6717 struct cfg80211_cached_keys *connkeys = NULL;
6718 int err;
6719
6720 memset(&ibss, 0, sizeof(ibss));
6721
6722 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6723 return -EINVAL;
6724
6725 if (!info->attrs[NL80211_ATTR_SSID] ||
6726 !nla_len(info->attrs[NL80211_ATTR_SSID]))
6727 return -EINVAL;
6728
6729 ibss.beacon_interval = 100;
6730
6731 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
6732 ibss.beacon_interval =
6733 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
6734 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
6735 return -EINVAL;
6736 }
6737
6738 if (!rdev->ops->join_ibss)
6739 return -EOPNOTSUPP;
6740
6741 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6742 return -EOPNOTSUPP;
6743
6744 wiphy = &rdev->wiphy;
6745
6746 if (info->attrs[NL80211_ATTR_MAC]) {
6747 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6748
6749 if (!is_valid_ether_addr(ibss.bssid))
6750 return -EINVAL;
6751 }
6752 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6753 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6754
6755 if (info->attrs[NL80211_ATTR_IE]) {
6756 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6757 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6758 }
6759
6760 err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
6761 if (err)
6762 return err;
6763
6764 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
6765 NL80211_IFTYPE_ADHOC))
6766 return -EINVAL;
6767
6768 switch (ibss.chandef.width) {
6769 case NL80211_CHAN_WIDTH_5:
6770 case NL80211_CHAN_WIDTH_10:
6771 case NL80211_CHAN_WIDTH_20_NOHT:
6772 break;
6773 case NL80211_CHAN_WIDTH_20:
6774 case NL80211_CHAN_WIDTH_40:
6775 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
6776 break;
6777 default:
6778 return -EINVAL;
6779 }
6780
6781 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
6782 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6783
6784 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6785 u8 *rates =
6786 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6787 int n_rates =
6788 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6789 struct ieee80211_supported_band *sband =
6790 wiphy->bands[ibss.chandef.chan->band];
6791
6792 err = ieee80211_get_ratemask(sband, rates, n_rates,
6793 &ibss.basic_rates);
6794 if (err)
6795 return err;
6796 }
6797
6798 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6799 memcpy(&ibss.ht_capa_mask,
6800 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6801 sizeof(ibss.ht_capa_mask));
6802
6803 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6804 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6805 return -EINVAL;
6806 memcpy(&ibss.ht_capa,
6807 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6808 sizeof(ibss.ht_capa));
6809 }
6810
6811 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6812 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
6813 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6814 return -EINVAL;
6815
6816 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6817 bool no_ht = false;
6818
6819 connkeys = nl80211_parse_connkeys(rdev,
6820 info->attrs[NL80211_ATTR_KEYS],
6821 &no_ht);
6822 if (IS_ERR(connkeys))
6823 return PTR_ERR(connkeys);
6824
6825 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
6826 no_ht) {
6827 kfree(connkeys);
6828 return -EINVAL;
6829 }
6830 }
6831
6832 ibss.control_port =
6833 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
6834
6835 ibss.userspace_handles_dfs =
6836 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
6837
6838 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
6839 if (err)
6840 kfree(connkeys);
6841 return err;
6842 }
6843
6844 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
6845 {
6846 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6847 struct net_device *dev = info->user_ptr[1];
6848
6849 if (!rdev->ops->leave_ibss)
6850 return -EOPNOTSUPP;
6851
6852 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6853 return -EOPNOTSUPP;
6854
6855 return cfg80211_leave_ibss(rdev, dev, false);
6856 }
6857
6858 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
6859 {
6860 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6861 struct net_device *dev = info->user_ptr[1];
6862 int mcast_rate[IEEE80211_NUM_BANDS];
6863 u32 nla_rate;
6864 int err;
6865
6866 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
6867 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6868 return -EOPNOTSUPP;
6869
6870 if (!rdev->ops->set_mcast_rate)
6871 return -EOPNOTSUPP;
6872
6873 memset(mcast_rate, 0, sizeof(mcast_rate));
6874
6875 if (!info->attrs[NL80211_ATTR_MCAST_RATE])
6876 return -EINVAL;
6877
6878 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
6879 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
6880 return -EINVAL;
6881
6882 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
6883
6884 return err;
6885 }
6886
6887 static struct sk_buff *
6888 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
6889 int approxlen, u32 portid, u32 seq,
6890 enum nl80211_commands cmd,
6891 enum nl80211_attrs attr,
6892 const struct nl80211_vendor_cmd_info *info,
6893 gfp_t gfp)
6894 {
6895 struct sk_buff *skb;
6896 void *hdr;
6897 struct nlattr *data;
6898
6899 skb = nlmsg_new(approxlen + 100, gfp);
6900 if (!skb)
6901 return NULL;
6902
6903 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
6904 if (!hdr) {
6905 kfree_skb(skb);
6906 return NULL;
6907 }
6908
6909 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
6910 goto nla_put_failure;
6911
6912 if (info) {
6913 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
6914 info->vendor_id))
6915 goto nla_put_failure;
6916 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
6917 info->subcmd))
6918 goto nla_put_failure;
6919 }
6920
6921 data = nla_nest_start(skb, attr);
6922
6923 ((void **)skb->cb)[0] = rdev;
6924 ((void **)skb->cb)[1] = hdr;
6925 ((void **)skb->cb)[2] = data;
6926
6927 return skb;
6928
6929 nla_put_failure:
6930 kfree_skb(skb);
6931 return NULL;
6932 }
6933
6934 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
6935 enum nl80211_commands cmd,
6936 enum nl80211_attrs attr,
6937 int vendor_event_idx,
6938 int approxlen, gfp_t gfp)
6939 {
6940 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
6941 const struct nl80211_vendor_cmd_info *info;
6942
6943 switch (cmd) {
6944 case NL80211_CMD_TESTMODE:
6945 if (WARN_ON(vendor_event_idx != -1))
6946 return NULL;
6947 info = NULL;
6948 break;
6949 case NL80211_CMD_VENDOR:
6950 if (WARN_ON(vendor_event_idx < 0 ||
6951 vendor_event_idx >= wiphy->n_vendor_events))
6952 return NULL;
6953 info = &wiphy->vendor_events[vendor_event_idx];
6954 break;
6955 default:
6956 WARN_ON(1);
6957 return NULL;
6958 }
6959
6960 return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
6961 cmd, attr, info, gfp);
6962 }
6963 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
6964
6965 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
6966 {
6967 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6968 void *hdr = ((void **)skb->cb)[1];
6969 struct nlattr *data = ((void **)skb->cb)[2];
6970 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
6971
6972 /* clear CB data for netlink core to own from now on */
6973 memset(skb->cb, 0, sizeof(skb->cb));
6974
6975 nla_nest_end(skb, data);
6976 genlmsg_end(skb, hdr);
6977
6978 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
6979 mcgrp = NL80211_MCGRP_VENDOR;
6980
6981 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
6982 mcgrp, gfp);
6983 }
6984 EXPORT_SYMBOL(__cfg80211_send_event_skb);
6985
6986 #ifdef CONFIG_NL80211_TESTMODE
6987 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
6988 {
6989 struct cfg80211_registered_device *rdev = info->user_ptr[0];
6990 struct wireless_dev *wdev =
6991 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
6992 int err;
6993
6994 if (!rdev->ops->testmode_cmd)
6995 return -EOPNOTSUPP;
6996
6997 if (IS_ERR(wdev)) {
6998 err = PTR_ERR(wdev);
6999 if (err != -EINVAL)
7000 return err;
7001 wdev = NULL;
7002 } else if (wdev->wiphy != &rdev->wiphy) {
7003 return -EINVAL;
7004 }
7005
7006 if (!info->attrs[NL80211_ATTR_TESTDATA])
7007 return -EINVAL;
7008
7009 rdev->cur_cmd_info = info;
7010 err = rdev_testmode_cmd(rdev, wdev,
7011 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7012 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7013 rdev->cur_cmd_info = NULL;
7014
7015 return err;
7016 }
7017
7018 static int nl80211_testmode_dump(struct sk_buff *skb,
7019 struct netlink_callback *cb)
7020 {
7021 struct cfg80211_registered_device *rdev;
7022 int err;
7023 long phy_idx;
7024 void *data = NULL;
7025 int data_len = 0;
7026
7027 rtnl_lock();
7028
7029 if (cb->args[0]) {
7030 /*
7031 * 0 is a valid index, but not valid for args[0],
7032 * so we need to offset by 1.
7033 */
7034 phy_idx = cb->args[0] - 1;
7035 } else {
7036 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7037 nl80211_fam.attrbuf, nl80211_fam.maxattr,
7038 nl80211_policy);
7039 if (err)
7040 goto out_err;
7041
7042 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7043 nl80211_fam.attrbuf);
7044 if (IS_ERR(rdev)) {
7045 err = PTR_ERR(rdev);
7046 goto out_err;
7047 }
7048 phy_idx = rdev->wiphy_idx;
7049 rdev = NULL;
7050
7051 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7052 cb->args[1] =
7053 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7054 }
7055
7056 if (cb->args[1]) {
7057 data = nla_data((void *)cb->args[1]);
7058 data_len = nla_len((void *)cb->args[1]);
7059 }
7060
7061 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7062 if (!rdev) {
7063 err = -ENOENT;
7064 goto out_err;
7065 }
7066
7067 if (!rdev->ops->testmode_dump) {
7068 err = -EOPNOTSUPP;
7069 goto out_err;
7070 }
7071
7072 while (1) {
7073 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7074 cb->nlh->nlmsg_seq, NLM_F_MULTI,
7075 NL80211_CMD_TESTMODE);
7076 struct nlattr *tmdata;
7077
7078 if (!hdr)
7079 break;
7080
7081 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7082 genlmsg_cancel(skb, hdr);
7083 break;
7084 }
7085
7086 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7087 if (!tmdata) {
7088 genlmsg_cancel(skb, hdr);
7089 break;
7090 }
7091 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7092 nla_nest_end(skb, tmdata);
7093
7094 if (err == -ENOBUFS || err == -ENOENT) {
7095 genlmsg_cancel(skb, hdr);
7096 break;
7097 } else if (err) {
7098 genlmsg_cancel(skb, hdr);
7099 goto out_err;
7100 }
7101
7102 genlmsg_end(skb, hdr);
7103 }
7104
7105 err = skb->len;
7106 /* see above */
7107 cb->args[0] = phy_idx + 1;
7108 out_err:
7109 rtnl_unlock();
7110 return err;
7111 }
7112 #endif
7113
7114 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7115 {
7116 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7117 struct net_device *dev = info->user_ptr[1];
7118 struct cfg80211_connect_params connect;
7119 struct wiphy *wiphy;
7120 struct cfg80211_cached_keys *connkeys = NULL;
7121 int err;
7122
7123 memset(&connect, 0, sizeof(connect));
7124
7125 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7126 return -EINVAL;
7127
7128 if (!info->attrs[NL80211_ATTR_SSID] ||
7129 !nla_len(info->attrs[NL80211_ATTR_SSID]))
7130 return -EINVAL;
7131
7132 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7133 connect.auth_type =
7134 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7135 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7136 NL80211_CMD_CONNECT))
7137 return -EINVAL;
7138 } else
7139 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7140
7141 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7142
7143 err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7144 NL80211_MAX_NR_CIPHER_SUITES);
7145 if (err)
7146 return err;
7147
7148 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7149 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7150 return -EOPNOTSUPP;
7151
7152 wiphy = &rdev->wiphy;
7153
7154 connect.bg_scan_period = -1;
7155 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7156 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7157 connect.bg_scan_period =
7158 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7159 }
7160
7161 if (info->attrs[NL80211_ATTR_MAC])
7162 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7163 else if (info->attrs[NL80211_ATTR_MAC_HINT])
7164 connect.bssid_hint =
7165 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7166 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7167 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7168
7169 if (info->attrs[NL80211_ATTR_IE]) {
7170 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7171 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7172 }
7173
7174 if (info->attrs[NL80211_ATTR_USE_MFP]) {
7175 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7176 if (connect.mfp != NL80211_MFP_REQUIRED &&
7177 connect.mfp != NL80211_MFP_NO)
7178 return -EINVAL;
7179 } else {
7180 connect.mfp = NL80211_MFP_NO;
7181 }
7182
7183 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7184 connect.channel = nl80211_get_valid_chan(
7185 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7186 if (!connect.channel)
7187 return -EINVAL;
7188 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7189 connect.channel_hint = nl80211_get_valid_chan(
7190 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7191 if (!connect.channel_hint)
7192 return -EINVAL;
7193 }
7194
7195 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7196 connkeys = nl80211_parse_connkeys(rdev,
7197 info->attrs[NL80211_ATTR_KEYS], NULL);
7198 if (IS_ERR(connkeys))
7199 return PTR_ERR(connkeys);
7200 }
7201
7202 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7203 connect.flags |= ASSOC_REQ_DISABLE_HT;
7204
7205 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7206 memcpy(&connect.ht_capa_mask,
7207 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7208 sizeof(connect.ht_capa_mask));
7209
7210 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7211 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7212 kfree(connkeys);
7213 return -EINVAL;
7214 }
7215 memcpy(&connect.ht_capa,
7216 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7217 sizeof(connect.ht_capa));
7218 }
7219
7220 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7221 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7222
7223 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7224 memcpy(&connect.vht_capa_mask,
7225 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7226 sizeof(connect.vht_capa_mask));
7227
7228 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7229 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7230 kfree(connkeys);
7231 return -EINVAL;
7232 }
7233 memcpy(&connect.vht_capa,
7234 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7235 sizeof(connect.vht_capa));
7236 }
7237
7238 wdev_lock(dev->ieee80211_ptr);
7239 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7240 wdev_unlock(dev->ieee80211_ptr);
7241 if (err)
7242 kfree(connkeys);
7243 return err;
7244 }
7245
7246 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7247 {
7248 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7249 struct net_device *dev = info->user_ptr[1];
7250 u16 reason;
7251 int ret;
7252
7253 if (!info->attrs[NL80211_ATTR_REASON_CODE])
7254 reason = WLAN_REASON_DEAUTH_LEAVING;
7255 else
7256 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7257
7258 if (reason == 0)
7259 return -EINVAL;
7260
7261 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7262 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7263 return -EOPNOTSUPP;
7264
7265 wdev_lock(dev->ieee80211_ptr);
7266 ret = cfg80211_disconnect(rdev, dev, reason, true);
7267 wdev_unlock(dev->ieee80211_ptr);
7268 return ret;
7269 }
7270
7271 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7272 {
7273 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7274 struct net *net;
7275 int err;
7276 u32 pid;
7277
7278 if (!info->attrs[NL80211_ATTR_PID])
7279 return -EINVAL;
7280
7281 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7282
7283 net = get_net_ns_by_pid(pid);
7284 if (IS_ERR(net))
7285 return PTR_ERR(net);
7286
7287 err = 0;
7288
7289 /* check if anything to do */
7290 if (!net_eq(wiphy_net(&rdev->wiphy), net))
7291 err = cfg80211_switch_netns(rdev, net);
7292
7293 put_net(net);
7294 return err;
7295 }
7296
7297 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7298 {
7299 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7300 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7301 struct cfg80211_pmksa *pmksa) = NULL;
7302 struct net_device *dev = info->user_ptr[1];
7303 struct cfg80211_pmksa pmksa;
7304
7305 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7306
7307 if (!info->attrs[NL80211_ATTR_MAC])
7308 return -EINVAL;
7309
7310 if (!info->attrs[NL80211_ATTR_PMKID])
7311 return -EINVAL;
7312
7313 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7314 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7315
7316 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7317 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7318 return -EOPNOTSUPP;
7319
7320 switch (info->genlhdr->cmd) {
7321 case NL80211_CMD_SET_PMKSA:
7322 rdev_ops = rdev->ops->set_pmksa;
7323 break;
7324 case NL80211_CMD_DEL_PMKSA:
7325 rdev_ops = rdev->ops->del_pmksa;
7326 break;
7327 default:
7328 WARN_ON(1);
7329 break;
7330 }
7331
7332 if (!rdev_ops)
7333 return -EOPNOTSUPP;
7334
7335 return rdev_ops(&rdev->wiphy, dev, &pmksa);
7336 }
7337
7338 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7339 {
7340 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7341 struct net_device *dev = info->user_ptr[1];
7342
7343 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7344 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7345 return -EOPNOTSUPP;
7346
7347 if (!rdev->ops->flush_pmksa)
7348 return -EOPNOTSUPP;
7349
7350 return rdev_flush_pmksa(rdev, dev);
7351 }
7352
7353 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7354 {
7355 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7356 struct net_device *dev = info->user_ptr[1];
7357 u8 action_code, dialog_token;
7358 u32 peer_capability = 0;
7359 u16 status_code;
7360 u8 *peer;
7361 bool initiator;
7362
7363 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7364 !rdev->ops->tdls_mgmt)
7365 return -EOPNOTSUPP;
7366
7367 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7368 !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7369 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7370 !info->attrs[NL80211_ATTR_IE] ||
7371 !info->attrs[NL80211_ATTR_MAC])
7372 return -EINVAL;
7373
7374 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7375 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7376 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7377 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7378 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
7379 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
7380 peer_capability =
7381 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
7382
7383 return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7384 dialog_token, status_code, peer_capability,
7385 initiator,
7386 nla_data(info->attrs[NL80211_ATTR_IE]),
7387 nla_len(info->attrs[NL80211_ATTR_IE]));
7388 }
7389
7390 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7391 {
7392 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7393 struct net_device *dev = info->user_ptr[1];
7394 enum nl80211_tdls_operation operation;
7395 u8 *peer;
7396
7397 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7398 !rdev->ops->tdls_oper)
7399 return -EOPNOTSUPP;
7400
7401 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7402 !info->attrs[NL80211_ATTR_MAC])
7403 return -EINVAL;
7404
7405 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7406 peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7407
7408 return rdev_tdls_oper(rdev, dev, peer, operation);
7409 }
7410
7411 static int nl80211_remain_on_channel(struct sk_buff *skb,
7412 struct genl_info *info)
7413 {
7414 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7415 struct wireless_dev *wdev = info->user_ptr[1];
7416 struct cfg80211_chan_def chandef;
7417 struct sk_buff *msg;
7418 void *hdr;
7419 u64 cookie;
7420 u32 duration;
7421 int err;
7422
7423 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7424 !info->attrs[NL80211_ATTR_DURATION])
7425 return -EINVAL;
7426
7427 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7428
7429 if (!rdev->ops->remain_on_channel ||
7430 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7431 return -EOPNOTSUPP;
7432
7433 /*
7434 * We should be on that channel for at least a minimum amount of
7435 * time (10ms) but no longer than the driver supports.
7436 */
7437 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7438 duration > rdev->wiphy.max_remain_on_channel_duration)
7439 return -EINVAL;
7440
7441 err = nl80211_parse_chandef(rdev, info, &chandef);
7442 if (err)
7443 return err;
7444
7445 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7446 if (!msg)
7447 return -ENOMEM;
7448
7449 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7450 NL80211_CMD_REMAIN_ON_CHANNEL);
7451 if (!hdr) {
7452 err = -ENOBUFS;
7453 goto free_msg;
7454 }
7455
7456 err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7457 duration, &cookie);
7458
7459 if (err)
7460 goto free_msg;
7461
7462 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7463 goto nla_put_failure;
7464
7465 genlmsg_end(msg, hdr);
7466
7467 return genlmsg_reply(msg, info);
7468
7469 nla_put_failure:
7470 err = -ENOBUFS;
7471 free_msg:
7472 nlmsg_free(msg);
7473 return err;
7474 }
7475
7476 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7477 struct genl_info *info)
7478 {
7479 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7480 struct wireless_dev *wdev = info->user_ptr[1];
7481 u64 cookie;
7482
7483 if (!info->attrs[NL80211_ATTR_COOKIE])
7484 return -EINVAL;
7485
7486 if (!rdev->ops->cancel_remain_on_channel)
7487 return -EOPNOTSUPP;
7488
7489 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7490
7491 return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7492 }
7493
7494 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7495 u8 *rates, u8 rates_len)
7496 {
7497 u8 i;
7498 u32 mask = 0;
7499
7500 for (i = 0; i < rates_len; i++) {
7501 int rate = (rates[i] & 0x7f) * 5;
7502 int ridx;
7503 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7504 struct ieee80211_rate *srate =
7505 &sband->bitrates[ridx];
7506 if (rate == srate->bitrate) {
7507 mask |= 1 << ridx;
7508 break;
7509 }
7510 }
7511 if (ridx == sband->n_bitrates)
7512 return 0; /* rate not found */
7513 }
7514
7515 return mask;
7516 }
7517
7518 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7519 u8 *rates, u8 rates_len,
7520 u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7521 {
7522 u8 i;
7523
7524 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7525
7526 for (i = 0; i < rates_len; i++) {
7527 int ridx, rbit;
7528
7529 ridx = rates[i] / 8;
7530 rbit = BIT(rates[i] % 8);
7531
7532 /* check validity */
7533 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7534 return false;
7535
7536 /* check availability */
7537 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7538 mcs[ridx] |= rbit;
7539 else
7540 return false;
7541 }
7542
7543 return true;
7544 }
7545
7546 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
7547 {
7548 u16 mcs_mask = 0;
7549
7550 switch (vht_mcs_map) {
7551 case IEEE80211_VHT_MCS_NOT_SUPPORTED:
7552 break;
7553 case IEEE80211_VHT_MCS_SUPPORT_0_7:
7554 mcs_mask = 0x00FF;
7555 break;
7556 case IEEE80211_VHT_MCS_SUPPORT_0_8:
7557 mcs_mask = 0x01FF;
7558 break;
7559 case IEEE80211_VHT_MCS_SUPPORT_0_9:
7560 mcs_mask = 0x03FF;
7561 break;
7562 default:
7563 break;
7564 }
7565
7566 return mcs_mask;
7567 }
7568
7569 static void vht_build_mcs_mask(u16 vht_mcs_map,
7570 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
7571 {
7572 u8 nss;
7573
7574 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
7575 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
7576 vht_mcs_map >>= 2;
7577 }
7578 }
7579
7580 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
7581 struct nl80211_txrate_vht *txrate,
7582 u16 mcs[NL80211_VHT_NSS_MAX])
7583 {
7584 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
7585 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
7586 u8 i;
7587
7588 if (!sband->vht_cap.vht_supported)
7589 return false;
7590
7591 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
7592
7593 /* Build vht_mcs_mask from VHT capabilities */
7594 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
7595
7596 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
7597 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
7598 mcs[i] = txrate->mcs[i];
7599 else
7600 return false;
7601 }
7602
7603 return true;
7604 }
7605
7606 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7607 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7608 .len = NL80211_MAX_SUPP_RATES },
7609 [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
7610 .len = NL80211_MAX_SUPP_HT_RATES },
7611 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
7612 [NL80211_TXRATE_GI] = { .type = NLA_U8 },
7613 };
7614
7615 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7616 struct genl_info *info)
7617 {
7618 struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7619 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7620 struct cfg80211_bitrate_mask mask;
7621 int rem, i;
7622 struct net_device *dev = info->user_ptr[1];
7623 struct nlattr *tx_rates;
7624 struct ieee80211_supported_band *sband;
7625 u16 vht_tx_mcs_map;
7626
7627 if (!rdev->ops->set_bitrate_mask)
7628 return -EOPNOTSUPP;
7629
7630 memset(&mask, 0, sizeof(mask));
7631 /* Default to all rates enabled */
7632 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7633 sband = rdev->wiphy.bands[i];
7634
7635 if (!sband)
7636 continue;
7637
7638 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
7639 memcpy(mask.control[i].ht_mcs,
7640 sband->ht_cap.mcs.rx_mask,
7641 sizeof(mask.control[i].ht_mcs));
7642
7643 if (!sband->vht_cap.vht_supported)
7644 continue;
7645
7646 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
7647 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
7648 }
7649
7650 /* if no rates are given set it back to the defaults */
7651 if (!info->attrs[NL80211_ATTR_TX_RATES])
7652 goto out;
7653
7654 /*
7655 * The nested attribute uses enum nl80211_band as the index. This maps
7656 * directly to the enum ieee80211_band values used in cfg80211.
7657 */
7658 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7659 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
7660 enum ieee80211_band band = nla_type(tx_rates);
7661 int err;
7662
7663 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7664 return -EINVAL;
7665 sband = rdev->wiphy.bands[band];
7666 if (sband == NULL)
7667 return -EINVAL;
7668 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7669 nla_len(tx_rates), nl80211_txattr_policy);
7670 if (err)
7671 return err;
7672 if (tb[NL80211_TXRATE_LEGACY]) {
7673 mask.control[band].legacy = rateset_to_mask(
7674 sband,
7675 nla_data(tb[NL80211_TXRATE_LEGACY]),
7676 nla_len(tb[NL80211_TXRATE_LEGACY]));
7677 if ((mask.control[band].legacy == 0) &&
7678 nla_len(tb[NL80211_TXRATE_LEGACY]))
7679 return -EINVAL;
7680 }
7681 if (tb[NL80211_TXRATE_HT]) {
7682 if (!ht_rateset_to_mask(
7683 sband,
7684 nla_data(tb[NL80211_TXRATE_HT]),
7685 nla_len(tb[NL80211_TXRATE_HT]),
7686 mask.control[band].ht_mcs))
7687 return -EINVAL;
7688 }
7689 if (tb[NL80211_TXRATE_VHT]) {
7690 if (!vht_set_mcs_mask(
7691 sband,
7692 nla_data(tb[NL80211_TXRATE_VHT]),
7693 mask.control[band].vht_mcs))
7694 return -EINVAL;
7695 }
7696 if (tb[NL80211_TXRATE_GI]) {
7697 mask.control[band].gi =
7698 nla_get_u8(tb[NL80211_TXRATE_GI]);
7699 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
7700 return -EINVAL;
7701 }
7702
7703 if (mask.control[band].legacy == 0) {
7704 /* don't allow empty legacy rates if HT or VHT
7705 * are not even supported.
7706 */
7707 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
7708 rdev->wiphy.bands[band]->vht_cap.vht_supported))
7709 return -EINVAL;
7710
7711 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7712 if (mask.control[band].ht_mcs[i])
7713 goto out;
7714
7715 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
7716 if (mask.control[band].vht_mcs[i])
7717 goto out;
7718
7719 /* legacy and mcs rates may not be both empty */
7720 return -EINVAL;
7721 }
7722 }
7723
7724 out:
7725 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7726 }
7727
7728 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7729 {
7730 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7731 struct wireless_dev *wdev = info->user_ptr[1];
7732 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7733
7734 if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7735 return -EINVAL;
7736
7737 if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7738 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7739
7740 switch (wdev->iftype) {
7741 case NL80211_IFTYPE_STATION:
7742 case NL80211_IFTYPE_ADHOC:
7743 case NL80211_IFTYPE_P2P_CLIENT:
7744 case NL80211_IFTYPE_AP:
7745 case NL80211_IFTYPE_AP_VLAN:
7746 case NL80211_IFTYPE_MESH_POINT:
7747 case NL80211_IFTYPE_P2P_GO:
7748 case NL80211_IFTYPE_P2P_DEVICE:
7749 break;
7750 default:
7751 return -EOPNOTSUPP;
7752 }
7753
7754 /* not much point in registering if we can't reply */
7755 if (!rdev->ops->mgmt_tx)
7756 return -EOPNOTSUPP;
7757
7758 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7759 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7760 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7761 }
7762
7763 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7764 {
7765 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7766 struct wireless_dev *wdev = info->user_ptr[1];
7767 struct cfg80211_chan_def chandef;
7768 int err;
7769 void *hdr = NULL;
7770 u64 cookie;
7771 struct sk_buff *msg = NULL;
7772 struct cfg80211_mgmt_tx_params params = {
7773 .dont_wait_for_ack =
7774 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
7775 };
7776
7777 if (!info->attrs[NL80211_ATTR_FRAME])
7778 return -EINVAL;
7779
7780 if (!rdev->ops->mgmt_tx)
7781 return -EOPNOTSUPP;
7782
7783 switch (wdev->iftype) {
7784 case NL80211_IFTYPE_P2P_DEVICE:
7785 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7786 return -EINVAL;
7787 case NL80211_IFTYPE_STATION:
7788 case NL80211_IFTYPE_ADHOC:
7789 case NL80211_IFTYPE_P2P_CLIENT:
7790 case NL80211_IFTYPE_AP:
7791 case NL80211_IFTYPE_AP_VLAN:
7792 case NL80211_IFTYPE_MESH_POINT:
7793 case NL80211_IFTYPE_P2P_GO:
7794 break;
7795 default:
7796 return -EOPNOTSUPP;
7797 }
7798
7799 if (info->attrs[NL80211_ATTR_DURATION]) {
7800 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7801 return -EINVAL;
7802 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7803
7804 /*
7805 * We should wait on the channel for at least a minimum amount
7806 * of time (10ms) but no longer than the driver supports.
7807 */
7808 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7809 params.wait > rdev->wiphy.max_remain_on_channel_duration)
7810 return -EINVAL;
7811
7812 }
7813
7814 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
7815
7816 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7817 return -EINVAL;
7818
7819 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7820
7821 /* get the channel if any has been specified, otherwise pass NULL to
7822 * the driver. The latter will use the current one
7823 */
7824 chandef.chan = NULL;
7825 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7826 err = nl80211_parse_chandef(rdev, info, &chandef);
7827 if (err)
7828 return err;
7829 }
7830
7831 if (!chandef.chan && params.offchan)
7832 return -EINVAL;
7833
7834 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
7835 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
7836
7837 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
7838 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
7839 int i;
7840
7841 if (len % sizeof(u16))
7842 return -EINVAL;
7843
7844 params.n_csa_offsets = len / sizeof(u16);
7845 params.csa_offsets =
7846 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
7847
7848 /* check that all the offsets fit the frame */
7849 for (i = 0; i < params.n_csa_offsets; i++) {
7850 if (params.csa_offsets[i] >= params.len)
7851 return -EINVAL;
7852 }
7853 }
7854
7855 if (!params.dont_wait_for_ack) {
7856 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7857 if (!msg)
7858 return -ENOMEM;
7859
7860 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7861 NL80211_CMD_FRAME);
7862 if (!hdr) {
7863 err = -ENOBUFS;
7864 goto free_msg;
7865 }
7866 }
7867
7868 params.chan = chandef.chan;
7869 err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
7870 if (err)
7871 goto free_msg;
7872
7873 if (msg) {
7874 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7875 goto nla_put_failure;
7876
7877 genlmsg_end(msg, hdr);
7878 return genlmsg_reply(msg, info);
7879 }
7880
7881 return 0;
7882
7883 nla_put_failure:
7884 err = -ENOBUFS;
7885 free_msg:
7886 nlmsg_free(msg);
7887 return err;
7888 }
7889
7890 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
7891 {
7892 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7893 struct wireless_dev *wdev = info->user_ptr[1];
7894 u64 cookie;
7895
7896 if (!info->attrs[NL80211_ATTR_COOKIE])
7897 return -EINVAL;
7898
7899 if (!rdev->ops->mgmt_tx_cancel_wait)
7900 return -EOPNOTSUPP;
7901
7902 switch (wdev->iftype) {
7903 case NL80211_IFTYPE_STATION:
7904 case NL80211_IFTYPE_ADHOC:
7905 case NL80211_IFTYPE_P2P_CLIENT:
7906 case NL80211_IFTYPE_AP:
7907 case NL80211_IFTYPE_AP_VLAN:
7908 case NL80211_IFTYPE_P2P_GO:
7909 case NL80211_IFTYPE_P2P_DEVICE:
7910 break;
7911 default:
7912 return -EOPNOTSUPP;
7913 }
7914
7915 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7916
7917 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
7918 }
7919
7920 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
7921 {
7922 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7923 struct wireless_dev *wdev;
7924 struct net_device *dev = info->user_ptr[1];
7925 u8 ps_state;
7926 bool state;
7927 int err;
7928
7929 if (!info->attrs[NL80211_ATTR_PS_STATE])
7930 return -EINVAL;
7931
7932 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
7933
7934 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
7935 return -EINVAL;
7936
7937 wdev = dev->ieee80211_ptr;
7938
7939 if (!rdev->ops->set_power_mgmt)
7940 return -EOPNOTSUPP;
7941
7942 state = (ps_state == NL80211_PS_ENABLED) ? true : false;
7943
7944 if (state == wdev->ps)
7945 return 0;
7946
7947 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
7948 if (!err)
7949 wdev->ps = state;
7950 return err;
7951 }
7952
7953 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
7954 {
7955 struct cfg80211_registered_device *rdev = info->user_ptr[0];
7956 enum nl80211_ps_state ps_state;
7957 struct wireless_dev *wdev;
7958 struct net_device *dev = info->user_ptr[1];
7959 struct sk_buff *msg;
7960 void *hdr;
7961 int err;
7962
7963 wdev = dev->ieee80211_ptr;
7964
7965 if (!rdev->ops->set_power_mgmt)
7966 return -EOPNOTSUPP;
7967
7968 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7969 if (!msg)
7970 return -ENOMEM;
7971
7972 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7973 NL80211_CMD_GET_POWER_SAVE);
7974 if (!hdr) {
7975 err = -ENOBUFS;
7976 goto free_msg;
7977 }
7978
7979 if (wdev->ps)
7980 ps_state = NL80211_PS_ENABLED;
7981 else
7982 ps_state = NL80211_PS_DISABLED;
7983
7984 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
7985 goto nla_put_failure;
7986
7987 genlmsg_end(msg, hdr);
7988 return genlmsg_reply(msg, info);
7989
7990 nla_put_failure:
7991 err = -ENOBUFS;
7992 free_msg:
7993 nlmsg_free(msg);
7994 return err;
7995 }
7996
7997 static const struct nla_policy
7998 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
7999 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8000 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8001 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8002 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8003 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8004 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8005 };
8006
8007 static int nl80211_set_cqm_txe(struct genl_info *info,
8008 u32 rate, u32 pkts, u32 intvl)
8009 {
8010 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8011 struct net_device *dev = info->user_ptr[1];
8012 struct wireless_dev *wdev = dev->ieee80211_ptr;
8013
8014 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8015 return -EINVAL;
8016
8017 if (!rdev->ops->set_cqm_txe_config)
8018 return -EOPNOTSUPP;
8019
8020 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8021 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8022 return -EOPNOTSUPP;
8023
8024 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8025 }
8026
8027 static int nl80211_set_cqm_rssi(struct genl_info *info,
8028 s32 threshold, u32 hysteresis)
8029 {
8030 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8031 struct net_device *dev = info->user_ptr[1];
8032 struct wireless_dev *wdev = dev->ieee80211_ptr;
8033
8034 if (threshold > 0)
8035 return -EINVAL;
8036
8037 /* disabling - hysteresis should also be zero then */
8038 if (threshold == 0)
8039 hysteresis = 0;
8040
8041 if (!rdev->ops->set_cqm_rssi_config)
8042 return -EOPNOTSUPP;
8043
8044 if (wdev->iftype != NL80211_IFTYPE_STATION &&
8045 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8046 return -EOPNOTSUPP;
8047
8048 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8049 }
8050
8051 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8052 {
8053 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8054 struct nlattr *cqm;
8055 int err;
8056
8057 cqm = info->attrs[NL80211_ATTR_CQM];
8058 if (!cqm)
8059 return -EINVAL;
8060
8061 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8062 nl80211_attr_cqm_policy);
8063 if (err)
8064 return err;
8065
8066 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8067 attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8068 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8069 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8070
8071 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8072 }
8073
8074 if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8075 attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8076 attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8077 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8078 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8079 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8080
8081 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8082 }
8083
8084 return -EINVAL;
8085 }
8086
8087 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8088 {
8089 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8090 struct net_device *dev = info->user_ptr[1];
8091 struct mesh_config cfg;
8092 struct mesh_setup setup;
8093 int err;
8094
8095 /* start with default */
8096 memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8097 memcpy(&setup, &default_mesh_setup, sizeof(setup));
8098
8099 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8100 /* and parse parameters if given */
8101 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8102 if (err)
8103 return err;
8104 }
8105
8106 if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8107 !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8108 return -EINVAL;
8109
8110 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8111 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8112
8113 if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8114 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8115 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8116 return -EINVAL;
8117
8118 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8119 setup.beacon_interval =
8120 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8121 if (setup.beacon_interval < 10 ||
8122 setup.beacon_interval > 10000)
8123 return -EINVAL;
8124 }
8125
8126 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8127 setup.dtim_period =
8128 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8129 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8130 return -EINVAL;
8131 }
8132
8133 if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8134 /* parse additional setup parameters if given */
8135 err = nl80211_parse_mesh_setup(info, &setup);
8136 if (err)
8137 return err;
8138 }
8139
8140 if (setup.user_mpm)
8141 cfg.auto_open_plinks = false;
8142
8143 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8144 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8145 if (err)
8146 return err;
8147 } else {
8148 /* cfg80211_join_mesh() will sort it out */
8149 setup.chandef.chan = NULL;
8150 }
8151
8152 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8153 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8154 int n_rates =
8155 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8156 struct ieee80211_supported_band *sband;
8157
8158 if (!setup.chandef.chan)
8159 return -EINVAL;
8160
8161 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8162
8163 err = ieee80211_get_ratemask(sband, rates, n_rates,
8164 &setup.basic_rates);
8165 if (err)
8166 return err;
8167 }
8168
8169 return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8170 }
8171
8172 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8173 {
8174 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8175 struct net_device *dev = info->user_ptr[1];
8176
8177 return cfg80211_leave_mesh(rdev, dev);
8178 }
8179
8180 #ifdef CONFIG_PM
8181 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8182 struct cfg80211_registered_device *rdev)
8183 {
8184 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8185 struct nlattr *nl_pats, *nl_pat;
8186 int i, pat_len;
8187
8188 if (!wowlan->n_patterns)
8189 return 0;
8190
8191 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8192 if (!nl_pats)
8193 return -ENOBUFS;
8194
8195 for (i = 0; i < wowlan->n_patterns; i++) {
8196 nl_pat = nla_nest_start(msg, i + 1);
8197 if (!nl_pat)
8198 return -ENOBUFS;
8199 pat_len = wowlan->patterns[i].pattern_len;
8200 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8201 wowlan->patterns[i].mask) ||
8202 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8203 wowlan->patterns[i].pattern) ||
8204 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8205 wowlan->patterns[i].pkt_offset))
8206 return -ENOBUFS;
8207 nla_nest_end(msg, nl_pat);
8208 }
8209 nla_nest_end(msg, nl_pats);
8210
8211 return 0;
8212 }
8213
8214 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8215 struct cfg80211_wowlan_tcp *tcp)
8216 {
8217 struct nlattr *nl_tcp;
8218
8219 if (!tcp)
8220 return 0;
8221
8222 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8223 if (!nl_tcp)
8224 return -ENOBUFS;
8225
8226 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8227 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8228 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8229 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8230 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8231 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8232 tcp->payload_len, tcp->payload) ||
8233 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8234 tcp->data_interval) ||
8235 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8236 tcp->wake_len, tcp->wake_data) ||
8237 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8238 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8239 return -ENOBUFS;
8240
8241 if (tcp->payload_seq.len &&
8242 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8243 sizeof(tcp->payload_seq), &tcp->payload_seq))
8244 return -ENOBUFS;
8245
8246 if (tcp->payload_tok.len &&
8247 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8248 sizeof(tcp->payload_tok) + tcp->tokens_size,
8249 &tcp->payload_tok))
8250 return -ENOBUFS;
8251
8252 nla_nest_end(msg, nl_tcp);
8253
8254 return 0;
8255 }
8256
8257 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8258 {
8259 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8260 struct sk_buff *msg;
8261 void *hdr;
8262 u32 size = NLMSG_DEFAULT_SIZE;
8263
8264 if (!rdev->wiphy.wowlan)
8265 return -EOPNOTSUPP;
8266
8267 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8268 /* adjust size to have room for all the data */
8269 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8270 rdev->wiphy.wowlan_config->tcp->payload_len +
8271 rdev->wiphy.wowlan_config->tcp->wake_len +
8272 rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8273 }
8274
8275 msg = nlmsg_new(size, GFP_KERNEL);
8276 if (!msg)
8277 return -ENOMEM;
8278
8279 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8280 NL80211_CMD_GET_WOWLAN);
8281 if (!hdr)
8282 goto nla_put_failure;
8283
8284 if (rdev->wiphy.wowlan_config) {
8285 struct nlattr *nl_wowlan;
8286
8287 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8288 if (!nl_wowlan)
8289 goto nla_put_failure;
8290
8291 if ((rdev->wiphy.wowlan_config->any &&
8292 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8293 (rdev->wiphy.wowlan_config->disconnect &&
8294 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8295 (rdev->wiphy.wowlan_config->magic_pkt &&
8296 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8297 (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8298 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8299 (rdev->wiphy.wowlan_config->eap_identity_req &&
8300 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8301 (rdev->wiphy.wowlan_config->four_way_handshake &&
8302 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8303 (rdev->wiphy.wowlan_config->rfkill_release &&
8304 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8305 goto nla_put_failure;
8306
8307 if (nl80211_send_wowlan_patterns(msg, rdev))
8308 goto nla_put_failure;
8309
8310 if (nl80211_send_wowlan_tcp(msg,
8311 rdev->wiphy.wowlan_config->tcp))
8312 goto nla_put_failure;
8313
8314 nla_nest_end(msg, nl_wowlan);
8315 }
8316
8317 genlmsg_end(msg, hdr);
8318 return genlmsg_reply(msg, info);
8319
8320 nla_put_failure:
8321 nlmsg_free(msg);
8322 return -ENOBUFS;
8323 }
8324
8325 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8326 struct nlattr *attr,
8327 struct cfg80211_wowlan *trig)
8328 {
8329 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8330 struct cfg80211_wowlan_tcp *cfg;
8331 struct nl80211_wowlan_tcp_data_token *tok = NULL;
8332 struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8333 u32 size;
8334 u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8335 int err, port;
8336
8337 if (!rdev->wiphy.wowlan->tcp)
8338 return -EINVAL;
8339
8340 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8341 nla_data(attr), nla_len(attr),
8342 nl80211_wowlan_tcp_policy);
8343 if (err)
8344 return err;
8345
8346 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8347 !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8348 !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8349 !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8350 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8351 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8352 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8353 !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8354 return -EINVAL;
8355
8356 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8357 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8358 return -EINVAL;
8359
8360 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8361 rdev->wiphy.wowlan->tcp->data_interval_max ||
8362 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8363 return -EINVAL;
8364
8365 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8366 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8367 return -EINVAL;
8368
8369 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8370 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8371 return -EINVAL;
8372
8373 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8374 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8375
8376 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8377 tokens_size = tokln - sizeof(*tok);
8378
8379 if (!tok->len || tokens_size % tok->len)
8380 return -EINVAL;
8381 if (!rdev->wiphy.wowlan->tcp->tok)
8382 return -EINVAL;
8383 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8384 return -EINVAL;
8385 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8386 return -EINVAL;
8387 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8388 return -EINVAL;
8389 if (tok->offset + tok->len > data_size)
8390 return -EINVAL;
8391 }
8392
8393 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8394 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8395 if (!rdev->wiphy.wowlan->tcp->seq)
8396 return -EINVAL;
8397 if (seq->len == 0 || seq->len > 4)
8398 return -EINVAL;
8399 if (seq->len + seq->offset > data_size)
8400 return -EINVAL;
8401 }
8402
8403 size = sizeof(*cfg);
8404 size += data_size;
8405 size += wake_size + wake_mask_size;
8406 size += tokens_size;
8407
8408 cfg = kzalloc(size, GFP_KERNEL);
8409 if (!cfg)
8410 return -ENOMEM;
8411 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8412 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8413 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8414 ETH_ALEN);
8415 if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
8416 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
8417 else
8418 port = 0;
8419 #ifdef CONFIG_INET
8420 /* allocate a socket and port for it and use it */
8421 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
8422 IPPROTO_TCP, &cfg->sock, 1);
8423 if (err) {
8424 kfree(cfg);
8425 return err;
8426 }
8427 if (inet_csk_get_port(cfg->sock->sk, port)) {
8428 sock_release(cfg->sock);
8429 kfree(cfg);
8430 return -EADDRINUSE;
8431 }
8432 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
8433 #else
8434 if (!port) {
8435 kfree(cfg);
8436 return -EINVAL;
8437 }
8438 cfg->src_port = port;
8439 #endif
8440
8441 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
8442 cfg->payload_len = data_size;
8443 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
8444 memcpy((void *)cfg->payload,
8445 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
8446 data_size);
8447 if (seq)
8448 cfg->payload_seq = *seq;
8449 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
8450 cfg->wake_len = wake_size;
8451 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
8452 memcpy((void *)cfg->wake_data,
8453 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
8454 wake_size);
8455 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
8456 data_size + wake_size;
8457 memcpy((void *)cfg->wake_mask,
8458 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
8459 wake_mask_size);
8460 if (tok) {
8461 cfg->tokens_size = tokens_size;
8462 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
8463 }
8464
8465 trig->tcp = cfg;
8466
8467 return 0;
8468 }
8469
8470 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
8471 {
8472 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8473 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
8474 struct cfg80211_wowlan new_triggers = {};
8475 struct cfg80211_wowlan *ntrig;
8476 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
8477 int err, i;
8478 bool prev_enabled = rdev->wiphy.wowlan_config;
8479
8480 if (!wowlan)
8481 return -EOPNOTSUPP;
8482
8483 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
8484 cfg80211_rdev_free_wowlan(rdev);
8485 rdev->wiphy.wowlan_config = NULL;
8486 goto set_wakeup;
8487 }
8488
8489 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
8490 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8491 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8492 nl80211_wowlan_policy);
8493 if (err)
8494 return err;
8495
8496 if (tb[NL80211_WOWLAN_TRIG_ANY]) {
8497 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
8498 return -EINVAL;
8499 new_triggers.any = true;
8500 }
8501
8502 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
8503 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
8504 return -EINVAL;
8505 new_triggers.disconnect = true;
8506 }
8507
8508 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
8509 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
8510 return -EINVAL;
8511 new_triggers.magic_pkt = true;
8512 }
8513
8514 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
8515 return -EINVAL;
8516
8517 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
8518 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
8519 return -EINVAL;
8520 new_triggers.gtk_rekey_failure = true;
8521 }
8522
8523 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
8524 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
8525 return -EINVAL;
8526 new_triggers.eap_identity_req = true;
8527 }
8528
8529 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
8530 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
8531 return -EINVAL;
8532 new_triggers.four_way_handshake = true;
8533 }
8534
8535 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
8536 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
8537 return -EINVAL;
8538 new_triggers.rfkill_release = true;
8539 }
8540
8541 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
8542 struct nlattr *pat;
8543 int n_patterns = 0;
8544 int rem, pat_len, mask_len, pkt_offset;
8545 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8546
8547 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8548 rem)
8549 n_patterns++;
8550 if (n_patterns > wowlan->n_patterns)
8551 return -EINVAL;
8552
8553 new_triggers.patterns = kcalloc(n_patterns,
8554 sizeof(new_triggers.patterns[0]),
8555 GFP_KERNEL);
8556 if (!new_triggers.patterns)
8557 return -ENOMEM;
8558
8559 new_triggers.n_patterns = n_patterns;
8560 i = 0;
8561
8562 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8563 rem) {
8564 u8 *mask_pat;
8565
8566 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8567 nla_len(pat), NULL);
8568 err = -EINVAL;
8569 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8570 !pat_tb[NL80211_PKTPAT_PATTERN])
8571 goto error;
8572 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8573 mask_len = DIV_ROUND_UP(pat_len, 8);
8574 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8575 goto error;
8576 if (pat_len > wowlan->pattern_max_len ||
8577 pat_len < wowlan->pattern_min_len)
8578 goto error;
8579
8580 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8581 pkt_offset = 0;
8582 else
8583 pkt_offset = nla_get_u32(
8584 pat_tb[NL80211_PKTPAT_OFFSET]);
8585 if (pkt_offset > wowlan->max_pkt_offset)
8586 goto error;
8587 new_triggers.patterns[i].pkt_offset = pkt_offset;
8588
8589 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
8590 if (!mask_pat) {
8591 err = -ENOMEM;
8592 goto error;
8593 }
8594 new_triggers.patterns[i].mask = mask_pat;
8595 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
8596 mask_len);
8597 mask_pat += mask_len;
8598 new_triggers.patterns[i].pattern = mask_pat;
8599 new_triggers.patterns[i].pattern_len = pat_len;
8600 memcpy(mask_pat,
8601 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
8602 pat_len);
8603 i++;
8604 }
8605 }
8606
8607 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
8608 err = nl80211_parse_wowlan_tcp(
8609 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
8610 &new_triggers);
8611 if (err)
8612 goto error;
8613 }
8614
8615 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
8616 if (!ntrig) {
8617 err = -ENOMEM;
8618 goto error;
8619 }
8620 cfg80211_rdev_free_wowlan(rdev);
8621 rdev->wiphy.wowlan_config = ntrig;
8622
8623 set_wakeup:
8624 if (rdev->ops->set_wakeup &&
8625 prev_enabled != !!rdev->wiphy.wowlan_config)
8626 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
8627
8628 return 0;
8629 error:
8630 for (i = 0; i < new_triggers.n_patterns; i++)
8631 kfree(new_triggers.patterns[i].mask);
8632 kfree(new_triggers.patterns);
8633 if (new_triggers.tcp && new_triggers.tcp->sock)
8634 sock_release(new_triggers.tcp->sock);
8635 kfree(new_triggers.tcp);
8636 return err;
8637 }
8638 #endif
8639
8640 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
8641 struct cfg80211_registered_device *rdev)
8642 {
8643 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
8644 int i, j, pat_len;
8645 struct cfg80211_coalesce_rules *rule;
8646
8647 if (!rdev->coalesce->n_rules)
8648 return 0;
8649
8650 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
8651 if (!nl_rules)
8652 return -ENOBUFS;
8653
8654 for (i = 0; i < rdev->coalesce->n_rules; i++) {
8655 nl_rule = nla_nest_start(msg, i + 1);
8656 if (!nl_rule)
8657 return -ENOBUFS;
8658
8659 rule = &rdev->coalesce->rules[i];
8660 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
8661 rule->delay))
8662 return -ENOBUFS;
8663
8664 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
8665 rule->condition))
8666 return -ENOBUFS;
8667
8668 nl_pats = nla_nest_start(msg,
8669 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
8670 if (!nl_pats)
8671 return -ENOBUFS;
8672
8673 for (j = 0; j < rule->n_patterns; j++) {
8674 nl_pat = nla_nest_start(msg, j + 1);
8675 if (!nl_pat)
8676 return -ENOBUFS;
8677 pat_len = rule->patterns[j].pattern_len;
8678 if (nla_put(msg, NL80211_PKTPAT_MASK,
8679 DIV_ROUND_UP(pat_len, 8),
8680 rule->patterns[j].mask) ||
8681 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8682 rule->patterns[j].pattern) ||
8683 nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8684 rule->patterns[j].pkt_offset))
8685 return -ENOBUFS;
8686 nla_nest_end(msg, nl_pat);
8687 }
8688 nla_nest_end(msg, nl_pats);
8689 nla_nest_end(msg, nl_rule);
8690 }
8691 nla_nest_end(msg, nl_rules);
8692
8693 return 0;
8694 }
8695
8696 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
8697 {
8698 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8699 struct sk_buff *msg;
8700 void *hdr;
8701
8702 if (!rdev->wiphy.coalesce)
8703 return -EOPNOTSUPP;
8704
8705 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8706 if (!msg)
8707 return -ENOMEM;
8708
8709 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8710 NL80211_CMD_GET_COALESCE);
8711 if (!hdr)
8712 goto nla_put_failure;
8713
8714 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
8715 goto nla_put_failure;
8716
8717 genlmsg_end(msg, hdr);
8718 return genlmsg_reply(msg, info);
8719
8720 nla_put_failure:
8721 nlmsg_free(msg);
8722 return -ENOBUFS;
8723 }
8724
8725 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
8726 {
8727 struct cfg80211_coalesce *coalesce = rdev->coalesce;
8728 int i, j;
8729 struct cfg80211_coalesce_rules *rule;
8730
8731 if (!coalesce)
8732 return;
8733
8734 for (i = 0; i < coalesce->n_rules; i++) {
8735 rule = &coalesce->rules[i];
8736 for (j = 0; j < rule->n_patterns; j++)
8737 kfree(rule->patterns[j].mask);
8738 kfree(rule->patterns);
8739 }
8740 kfree(coalesce->rules);
8741 kfree(coalesce);
8742 rdev->coalesce = NULL;
8743 }
8744
8745 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
8746 struct nlattr *rule,
8747 struct cfg80211_coalesce_rules *new_rule)
8748 {
8749 int err, i;
8750 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8751 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
8752 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
8753 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8754
8755 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
8756 nla_len(rule), nl80211_coalesce_policy);
8757 if (err)
8758 return err;
8759
8760 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
8761 new_rule->delay =
8762 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
8763 if (new_rule->delay > coalesce->max_delay)
8764 return -EINVAL;
8765
8766 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
8767 new_rule->condition =
8768 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
8769 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
8770 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
8771 return -EINVAL;
8772
8773 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
8774 return -EINVAL;
8775
8776 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8777 rem)
8778 n_patterns++;
8779 if (n_patterns > coalesce->n_patterns)
8780 return -EINVAL;
8781
8782 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
8783 GFP_KERNEL);
8784 if (!new_rule->patterns)
8785 return -ENOMEM;
8786
8787 new_rule->n_patterns = n_patterns;
8788 i = 0;
8789
8790 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8791 rem) {
8792 u8 *mask_pat;
8793
8794 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8795 nla_len(pat), NULL);
8796 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8797 !pat_tb[NL80211_PKTPAT_PATTERN])
8798 return -EINVAL;
8799 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8800 mask_len = DIV_ROUND_UP(pat_len, 8);
8801 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8802 return -EINVAL;
8803 if (pat_len > coalesce->pattern_max_len ||
8804 pat_len < coalesce->pattern_min_len)
8805 return -EINVAL;
8806
8807 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8808 pkt_offset = 0;
8809 else
8810 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
8811 if (pkt_offset > coalesce->max_pkt_offset)
8812 return -EINVAL;
8813 new_rule->patterns[i].pkt_offset = pkt_offset;
8814
8815 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
8816 if (!mask_pat)
8817 return -ENOMEM;
8818
8819 new_rule->patterns[i].mask = mask_pat;
8820 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
8821 mask_len);
8822
8823 mask_pat += mask_len;
8824 new_rule->patterns[i].pattern = mask_pat;
8825 new_rule->patterns[i].pattern_len = pat_len;
8826 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
8827 pat_len);
8828 i++;
8829 }
8830
8831 return 0;
8832 }
8833
8834 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
8835 {
8836 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8837 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8838 struct cfg80211_coalesce new_coalesce = {};
8839 struct cfg80211_coalesce *n_coalesce;
8840 int err, rem_rule, n_rules = 0, i, j;
8841 struct nlattr *rule;
8842 struct cfg80211_coalesce_rules *tmp_rule;
8843
8844 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
8845 return -EOPNOTSUPP;
8846
8847 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
8848 cfg80211_rdev_free_coalesce(rdev);
8849 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
8850 return 0;
8851 }
8852
8853 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8854 rem_rule)
8855 n_rules++;
8856 if (n_rules > coalesce->n_rules)
8857 return -EINVAL;
8858
8859 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
8860 GFP_KERNEL);
8861 if (!new_coalesce.rules)
8862 return -ENOMEM;
8863
8864 new_coalesce.n_rules = n_rules;
8865 i = 0;
8866
8867 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8868 rem_rule) {
8869 err = nl80211_parse_coalesce_rule(rdev, rule,
8870 &new_coalesce.rules[i]);
8871 if (err)
8872 goto error;
8873
8874 i++;
8875 }
8876
8877 err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
8878 if (err)
8879 goto error;
8880
8881 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
8882 if (!n_coalesce) {
8883 err = -ENOMEM;
8884 goto error;
8885 }
8886 cfg80211_rdev_free_coalesce(rdev);
8887 rdev->coalesce = n_coalesce;
8888
8889 return 0;
8890 error:
8891 for (i = 0; i < new_coalesce.n_rules; i++) {
8892 tmp_rule = &new_coalesce.rules[i];
8893 for (j = 0; j < tmp_rule->n_patterns; j++)
8894 kfree(tmp_rule->patterns[j].mask);
8895 kfree(tmp_rule->patterns);
8896 }
8897 kfree(new_coalesce.rules);
8898
8899 return err;
8900 }
8901
8902 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
8903 {
8904 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8905 struct net_device *dev = info->user_ptr[1];
8906 struct wireless_dev *wdev = dev->ieee80211_ptr;
8907 struct nlattr *tb[NUM_NL80211_REKEY_DATA];
8908 struct cfg80211_gtk_rekey_data rekey_data;
8909 int err;
8910
8911 if (!info->attrs[NL80211_ATTR_REKEY_DATA])
8912 return -EINVAL;
8913
8914 err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
8915 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
8916 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
8917 nl80211_rekey_policy);
8918 if (err)
8919 return err;
8920
8921 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
8922 return -ERANGE;
8923 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
8924 return -ERANGE;
8925 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
8926 return -ERANGE;
8927
8928 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
8929 NL80211_KEK_LEN);
8930 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
8931 NL80211_KCK_LEN);
8932 memcpy(rekey_data.replay_ctr,
8933 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
8934 NL80211_REPLAY_CTR_LEN);
8935
8936 wdev_lock(wdev);
8937 if (!wdev->current_bss) {
8938 err = -ENOTCONN;
8939 goto out;
8940 }
8941
8942 if (!rdev->ops->set_rekey_data) {
8943 err = -EOPNOTSUPP;
8944 goto out;
8945 }
8946
8947 err = rdev_set_rekey_data(rdev, dev, &rekey_data);
8948 out:
8949 wdev_unlock(wdev);
8950 return err;
8951 }
8952
8953 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
8954 struct genl_info *info)
8955 {
8956 struct net_device *dev = info->user_ptr[1];
8957 struct wireless_dev *wdev = dev->ieee80211_ptr;
8958
8959 if (wdev->iftype != NL80211_IFTYPE_AP &&
8960 wdev->iftype != NL80211_IFTYPE_P2P_GO)
8961 return -EINVAL;
8962
8963 if (wdev->ap_unexpected_nlportid)
8964 return -EBUSY;
8965
8966 wdev->ap_unexpected_nlportid = info->snd_portid;
8967 return 0;
8968 }
8969
8970 static int nl80211_probe_client(struct sk_buff *skb,
8971 struct genl_info *info)
8972 {
8973 struct cfg80211_registered_device *rdev = info->user_ptr[0];
8974 struct net_device *dev = info->user_ptr[1];
8975 struct wireless_dev *wdev = dev->ieee80211_ptr;
8976 struct sk_buff *msg;
8977 void *hdr;
8978 const u8 *addr;
8979 u64 cookie;
8980 int err;
8981
8982 if (wdev->iftype != NL80211_IFTYPE_AP &&
8983 wdev->iftype != NL80211_IFTYPE_P2P_GO)
8984 return -EOPNOTSUPP;
8985
8986 if (!info->attrs[NL80211_ATTR_MAC])
8987 return -EINVAL;
8988
8989 if (!rdev->ops->probe_client)
8990 return -EOPNOTSUPP;
8991
8992 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8993 if (!msg)
8994 return -ENOMEM;
8995
8996 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8997 NL80211_CMD_PROBE_CLIENT);
8998 if (!hdr) {
8999 err = -ENOBUFS;
9000 goto free_msg;
9001 }
9002
9003 addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9004
9005 err = rdev_probe_client(rdev, dev, addr, &cookie);
9006 if (err)
9007 goto free_msg;
9008
9009 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9010 goto nla_put_failure;
9011
9012 genlmsg_end(msg, hdr);
9013
9014 return genlmsg_reply(msg, info);
9015
9016 nla_put_failure:
9017 err = -ENOBUFS;
9018 free_msg:
9019 nlmsg_free(msg);
9020 return err;
9021 }
9022
9023 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9024 {
9025 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9026 struct cfg80211_beacon_registration *reg, *nreg;
9027 int rv;
9028
9029 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9030 return -EOPNOTSUPP;
9031
9032 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9033 if (!nreg)
9034 return -ENOMEM;
9035
9036 /* First, check if already registered. */
9037 spin_lock_bh(&rdev->beacon_registrations_lock);
9038 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9039 if (reg->nlportid == info->snd_portid) {
9040 rv = -EALREADY;
9041 goto out_err;
9042 }
9043 }
9044 /* Add it to the list */
9045 nreg->nlportid = info->snd_portid;
9046 list_add(&nreg->list, &rdev->beacon_registrations);
9047
9048 spin_unlock_bh(&rdev->beacon_registrations_lock);
9049
9050 return 0;
9051 out_err:
9052 spin_unlock_bh(&rdev->beacon_registrations_lock);
9053 kfree(nreg);
9054 return rv;
9055 }
9056
9057 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9058 {
9059 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9060 struct wireless_dev *wdev = info->user_ptr[1];
9061 int err;
9062
9063 if (!rdev->ops->start_p2p_device)
9064 return -EOPNOTSUPP;
9065
9066 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9067 return -EOPNOTSUPP;
9068
9069 if (wdev->p2p_started)
9070 return 0;
9071
9072 if (rfkill_blocked(rdev->rfkill))
9073 return -ERFKILL;
9074
9075 err = rdev_start_p2p_device(rdev, wdev);
9076 if (err)
9077 return err;
9078
9079 wdev->p2p_started = true;
9080 rdev->opencount++;
9081
9082 return 0;
9083 }
9084
9085 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
9086 {
9087 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9088 struct wireless_dev *wdev = info->user_ptr[1];
9089
9090 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9091 return -EOPNOTSUPP;
9092
9093 if (!rdev->ops->stop_p2p_device)
9094 return -EOPNOTSUPP;
9095
9096 cfg80211_stop_p2p_device(rdev, wdev);
9097
9098 return 0;
9099 }
9100
9101 static int nl80211_get_protocol_features(struct sk_buff *skb,
9102 struct genl_info *info)
9103 {
9104 void *hdr;
9105 struct sk_buff *msg;
9106
9107 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9108 if (!msg)
9109 return -ENOMEM;
9110
9111 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9112 NL80211_CMD_GET_PROTOCOL_FEATURES);
9113 if (!hdr)
9114 goto nla_put_failure;
9115
9116 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
9117 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
9118 goto nla_put_failure;
9119
9120 genlmsg_end(msg, hdr);
9121 return genlmsg_reply(msg, info);
9122
9123 nla_put_failure:
9124 kfree_skb(msg);
9125 return -ENOBUFS;
9126 }
9127
9128 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
9129 {
9130 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9131 struct cfg80211_update_ft_ies_params ft_params;
9132 struct net_device *dev = info->user_ptr[1];
9133
9134 if (!rdev->ops->update_ft_ies)
9135 return -EOPNOTSUPP;
9136
9137 if (!info->attrs[NL80211_ATTR_MDID] ||
9138 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9139 return -EINVAL;
9140
9141 memset(&ft_params, 0, sizeof(ft_params));
9142 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
9143 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9144 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9145
9146 return rdev_update_ft_ies(rdev, dev, &ft_params);
9147 }
9148
9149 static int nl80211_crit_protocol_start(struct sk_buff *skb,
9150 struct genl_info *info)
9151 {
9152 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9153 struct wireless_dev *wdev = info->user_ptr[1];
9154 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
9155 u16 duration;
9156 int ret;
9157
9158 if (!rdev->ops->crit_proto_start)
9159 return -EOPNOTSUPP;
9160
9161 if (WARN_ON(!rdev->ops->crit_proto_stop))
9162 return -EINVAL;
9163
9164 if (rdev->crit_proto_nlportid)
9165 return -EBUSY;
9166
9167 /* determine protocol if provided */
9168 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
9169 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
9170
9171 if (proto >= NUM_NL80211_CRIT_PROTO)
9172 return -EINVAL;
9173
9174 /* timeout must be provided */
9175 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
9176 return -EINVAL;
9177
9178 duration =
9179 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
9180
9181 if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
9182 return -ERANGE;
9183
9184 ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
9185 if (!ret)
9186 rdev->crit_proto_nlportid = info->snd_portid;
9187
9188 return ret;
9189 }
9190
9191 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
9192 struct genl_info *info)
9193 {
9194 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9195 struct wireless_dev *wdev = info->user_ptr[1];
9196
9197 if (!rdev->ops->crit_proto_stop)
9198 return -EOPNOTSUPP;
9199
9200 if (rdev->crit_proto_nlportid) {
9201 rdev->crit_proto_nlportid = 0;
9202 rdev_crit_proto_stop(rdev, wdev);
9203 }
9204 return 0;
9205 }
9206
9207 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
9208 {
9209 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9210 struct wireless_dev *wdev =
9211 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9212 int i, err;
9213 u32 vid, subcmd;
9214
9215 if (!rdev->wiphy.vendor_commands)
9216 return -EOPNOTSUPP;
9217
9218 if (IS_ERR(wdev)) {
9219 err = PTR_ERR(wdev);
9220 if (err != -EINVAL)
9221 return err;
9222 wdev = NULL;
9223 } else if (wdev->wiphy != &rdev->wiphy) {
9224 return -EINVAL;
9225 }
9226
9227 if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9228 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9229 return -EINVAL;
9230
9231 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9232 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9233 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9234 const struct wiphy_vendor_command *vcmd;
9235 void *data = NULL;
9236 int len = 0;
9237
9238 vcmd = &rdev->wiphy.vendor_commands[i];
9239
9240 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9241 continue;
9242
9243 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9244 WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9245 if (!wdev)
9246 return -EINVAL;
9247 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9248 !wdev->netdev)
9249 return -EINVAL;
9250
9251 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9252 if (wdev->netdev &&
9253 !netif_running(wdev->netdev))
9254 return -ENETDOWN;
9255 if (!wdev->netdev && !wdev->p2p_started)
9256 return -ENETDOWN;
9257 }
9258 } else {
9259 wdev = NULL;
9260 }
9261
9262 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9263 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9264 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9265 }
9266
9267 rdev->cur_cmd_info = info;
9268 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9269 data, len);
9270 rdev->cur_cmd_info = NULL;
9271 return err;
9272 }
9273
9274 return -EOPNOTSUPP;
9275 }
9276
9277 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9278 enum nl80211_commands cmd,
9279 enum nl80211_attrs attr,
9280 int approxlen)
9281 {
9282 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9283
9284 if (WARN_ON(!rdev->cur_cmd_info))
9285 return NULL;
9286
9287 return __cfg80211_alloc_vendor_skb(rdev, approxlen,
9288 rdev->cur_cmd_info->snd_portid,
9289 rdev->cur_cmd_info->snd_seq,
9290 cmd, attr, NULL, GFP_KERNEL);
9291 }
9292 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9293
9294 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9295 {
9296 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9297 void *hdr = ((void **)skb->cb)[1];
9298 struct nlattr *data = ((void **)skb->cb)[2];
9299
9300 /* clear CB data for netlink core to own from now on */
9301 memset(skb->cb, 0, sizeof(skb->cb));
9302
9303 if (WARN_ON(!rdev->cur_cmd_info)) {
9304 kfree_skb(skb);
9305 return -EINVAL;
9306 }
9307
9308 nla_nest_end(skb, data);
9309 genlmsg_end(skb, hdr);
9310 return genlmsg_reply(skb, rdev->cur_cmd_info);
9311 }
9312 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9313
9314
9315 static int nl80211_set_qos_map(struct sk_buff *skb,
9316 struct genl_info *info)
9317 {
9318 struct cfg80211_registered_device *rdev = info->user_ptr[0];
9319 struct cfg80211_qos_map *qos_map = NULL;
9320 struct net_device *dev = info->user_ptr[1];
9321 u8 *pos, len, num_des, des_len, des;
9322 int ret;
9323
9324 if (!rdev->ops->set_qos_map)
9325 return -EOPNOTSUPP;
9326
9327 if (info->attrs[NL80211_ATTR_QOS_MAP]) {
9328 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
9329 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
9330
9331 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
9332 len > IEEE80211_QOS_MAP_LEN_MAX)
9333 return -EINVAL;
9334
9335 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
9336 if (!qos_map)
9337 return -ENOMEM;
9338
9339 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
9340 if (num_des) {
9341 des_len = num_des *
9342 sizeof(struct cfg80211_dscp_exception);
9343 memcpy(qos_map->dscp_exception, pos, des_len);
9344 qos_map->num_des = num_des;
9345 for (des = 0; des < num_des; des++) {
9346 if (qos_map->dscp_exception[des].up > 7) {
9347 kfree(qos_map);
9348 return -EINVAL;
9349 }
9350 }
9351 pos += des_len;
9352 }
9353 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
9354 }
9355
9356 wdev_lock(dev->ieee80211_ptr);
9357 ret = nl80211_key_allowed(dev->ieee80211_ptr);
9358 if (!ret)
9359 ret = rdev_set_qos_map(rdev, dev, qos_map);
9360 wdev_unlock(dev->ieee80211_ptr);
9361
9362 kfree(qos_map);
9363 return ret;
9364 }
9365
9366 #define NL80211_FLAG_NEED_WIPHY 0x01
9367 #define NL80211_FLAG_NEED_NETDEV 0x02
9368 #define NL80211_FLAG_NEED_RTNL 0x04
9369 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08
9370 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\
9371 NL80211_FLAG_CHECK_NETDEV_UP)
9372 #define NL80211_FLAG_NEED_WDEV 0x10
9373 /* If a netdev is associated, it must be UP, P2P must be started */
9374 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\
9375 NL80211_FLAG_CHECK_NETDEV_UP)
9376
9377 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
9378 struct genl_info *info)
9379 {
9380 struct cfg80211_registered_device *rdev;
9381 struct wireless_dev *wdev;
9382 struct net_device *dev;
9383 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
9384
9385 if (rtnl)
9386 rtnl_lock();
9387
9388 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
9389 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
9390 if (IS_ERR(rdev)) {
9391 if (rtnl)
9392 rtnl_unlock();
9393 return PTR_ERR(rdev);
9394 }
9395 info->user_ptr[0] = rdev;
9396 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
9397 ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
9398 ASSERT_RTNL();
9399
9400 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
9401 info->attrs);
9402 if (IS_ERR(wdev)) {
9403 if (rtnl)
9404 rtnl_unlock();
9405 return PTR_ERR(wdev);
9406 }
9407
9408 dev = wdev->netdev;
9409 rdev = wiphy_to_rdev(wdev->wiphy);
9410
9411 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
9412 if (!dev) {
9413 if (rtnl)
9414 rtnl_unlock();
9415 return -EINVAL;
9416 }
9417
9418 info->user_ptr[1] = dev;
9419 } else {
9420 info->user_ptr[1] = wdev;
9421 }
9422
9423 if (dev) {
9424 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
9425 !netif_running(dev)) {
9426 if (rtnl)
9427 rtnl_unlock();
9428 return -ENETDOWN;
9429 }
9430
9431 dev_hold(dev);
9432 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
9433 if (!wdev->p2p_started) {
9434 if (rtnl)
9435 rtnl_unlock();
9436 return -ENETDOWN;
9437 }
9438 }
9439
9440 info->user_ptr[0] = rdev;
9441 }
9442
9443 return 0;
9444 }
9445
9446 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
9447 struct genl_info *info)
9448 {
9449 if (info->user_ptr[1]) {
9450 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
9451 struct wireless_dev *wdev = info->user_ptr[1];
9452
9453 if (wdev->netdev)
9454 dev_put(wdev->netdev);
9455 } else {
9456 dev_put(info->user_ptr[1]);
9457 }
9458 }
9459 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
9460 rtnl_unlock();
9461 }
9462
9463 static const struct genl_ops nl80211_ops[] = {
9464 {
9465 .cmd = NL80211_CMD_GET_WIPHY,
9466 .doit = nl80211_get_wiphy,
9467 .dumpit = nl80211_dump_wiphy,
9468 .done = nl80211_dump_wiphy_done,
9469 .policy = nl80211_policy,
9470 /* can be retrieved by unprivileged users */
9471 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9472 NL80211_FLAG_NEED_RTNL,
9473 },
9474 {
9475 .cmd = NL80211_CMD_SET_WIPHY,
9476 .doit = nl80211_set_wiphy,
9477 .policy = nl80211_policy,
9478 .flags = GENL_ADMIN_PERM,
9479 .internal_flags = NL80211_FLAG_NEED_RTNL,
9480 },
9481 {
9482 .cmd = NL80211_CMD_GET_INTERFACE,
9483 .doit = nl80211_get_interface,
9484 .dumpit = nl80211_dump_interface,
9485 .policy = nl80211_policy,
9486 /* can be retrieved by unprivileged users */
9487 .internal_flags = NL80211_FLAG_NEED_WDEV |
9488 NL80211_FLAG_NEED_RTNL,
9489 },
9490 {
9491 .cmd = NL80211_CMD_SET_INTERFACE,
9492 .doit = nl80211_set_interface,
9493 .policy = nl80211_policy,
9494 .flags = GENL_ADMIN_PERM,
9495 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9496 NL80211_FLAG_NEED_RTNL,
9497 },
9498 {
9499 .cmd = NL80211_CMD_NEW_INTERFACE,
9500 .doit = nl80211_new_interface,
9501 .policy = nl80211_policy,
9502 .flags = GENL_ADMIN_PERM,
9503 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9504 NL80211_FLAG_NEED_RTNL,
9505 },
9506 {
9507 .cmd = NL80211_CMD_DEL_INTERFACE,
9508 .doit = nl80211_del_interface,
9509 .policy = nl80211_policy,
9510 .flags = GENL_ADMIN_PERM,
9511 .internal_flags = NL80211_FLAG_NEED_WDEV |
9512 NL80211_FLAG_NEED_RTNL,
9513 },
9514 {
9515 .cmd = NL80211_CMD_GET_KEY,
9516 .doit = nl80211_get_key,
9517 .policy = nl80211_policy,
9518 .flags = GENL_ADMIN_PERM,
9519 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9520 NL80211_FLAG_NEED_RTNL,
9521 },
9522 {
9523 .cmd = NL80211_CMD_SET_KEY,
9524 .doit = nl80211_set_key,
9525 .policy = nl80211_policy,
9526 .flags = GENL_ADMIN_PERM,
9527 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9528 NL80211_FLAG_NEED_RTNL,
9529 },
9530 {
9531 .cmd = NL80211_CMD_NEW_KEY,
9532 .doit = nl80211_new_key,
9533 .policy = nl80211_policy,
9534 .flags = GENL_ADMIN_PERM,
9535 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9536 NL80211_FLAG_NEED_RTNL,
9537 },
9538 {
9539 .cmd = NL80211_CMD_DEL_KEY,
9540 .doit = nl80211_del_key,
9541 .policy = nl80211_policy,
9542 .flags = GENL_ADMIN_PERM,
9543 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9544 NL80211_FLAG_NEED_RTNL,
9545 },
9546 {
9547 .cmd = NL80211_CMD_SET_BEACON,
9548 .policy = nl80211_policy,
9549 .flags = GENL_ADMIN_PERM,
9550 .doit = nl80211_set_beacon,
9551 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9552 NL80211_FLAG_NEED_RTNL,
9553 },
9554 {
9555 .cmd = NL80211_CMD_START_AP,
9556 .policy = nl80211_policy,
9557 .flags = GENL_ADMIN_PERM,
9558 .doit = nl80211_start_ap,
9559 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9560 NL80211_FLAG_NEED_RTNL,
9561 },
9562 {
9563 .cmd = NL80211_CMD_STOP_AP,
9564 .policy = nl80211_policy,
9565 .flags = GENL_ADMIN_PERM,
9566 .doit = nl80211_stop_ap,
9567 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9568 NL80211_FLAG_NEED_RTNL,
9569 },
9570 {
9571 .cmd = NL80211_CMD_GET_STATION,
9572 .doit = nl80211_get_station,
9573 .dumpit = nl80211_dump_station,
9574 .policy = nl80211_policy,
9575 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9576 NL80211_FLAG_NEED_RTNL,
9577 },
9578 {
9579 .cmd = NL80211_CMD_SET_STATION,
9580 .doit = nl80211_set_station,
9581 .policy = nl80211_policy,
9582 .flags = GENL_ADMIN_PERM,
9583 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9584 NL80211_FLAG_NEED_RTNL,
9585 },
9586 {
9587 .cmd = NL80211_CMD_NEW_STATION,
9588 .doit = nl80211_new_station,
9589 .policy = nl80211_policy,
9590 .flags = GENL_ADMIN_PERM,
9591 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9592 NL80211_FLAG_NEED_RTNL,
9593 },
9594 {
9595 .cmd = NL80211_CMD_DEL_STATION,
9596 .doit = nl80211_del_station,
9597 .policy = nl80211_policy,
9598 .flags = GENL_ADMIN_PERM,
9599 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9600 NL80211_FLAG_NEED_RTNL,
9601 },
9602 {
9603 .cmd = NL80211_CMD_GET_MPATH,
9604 .doit = nl80211_get_mpath,
9605 .dumpit = nl80211_dump_mpath,
9606 .policy = nl80211_policy,
9607 .flags = GENL_ADMIN_PERM,
9608 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9609 NL80211_FLAG_NEED_RTNL,
9610 },
9611 {
9612 .cmd = NL80211_CMD_SET_MPATH,
9613 .doit = nl80211_set_mpath,
9614 .policy = nl80211_policy,
9615 .flags = GENL_ADMIN_PERM,
9616 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9617 NL80211_FLAG_NEED_RTNL,
9618 },
9619 {
9620 .cmd = NL80211_CMD_NEW_MPATH,
9621 .doit = nl80211_new_mpath,
9622 .policy = nl80211_policy,
9623 .flags = GENL_ADMIN_PERM,
9624 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9625 NL80211_FLAG_NEED_RTNL,
9626 },
9627 {
9628 .cmd = NL80211_CMD_DEL_MPATH,
9629 .doit = nl80211_del_mpath,
9630 .policy = nl80211_policy,
9631 .flags = GENL_ADMIN_PERM,
9632 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9633 NL80211_FLAG_NEED_RTNL,
9634 },
9635 {
9636 .cmd = NL80211_CMD_SET_BSS,
9637 .doit = nl80211_set_bss,
9638 .policy = nl80211_policy,
9639 .flags = GENL_ADMIN_PERM,
9640 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9641 NL80211_FLAG_NEED_RTNL,
9642 },
9643 {
9644 .cmd = NL80211_CMD_GET_REG,
9645 .doit = nl80211_get_reg,
9646 .policy = nl80211_policy,
9647 .internal_flags = NL80211_FLAG_NEED_RTNL,
9648 /* can be retrieved by unprivileged users */
9649 },
9650 {
9651 .cmd = NL80211_CMD_SET_REG,
9652 .doit = nl80211_set_reg,
9653 .policy = nl80211_policy,
9654 .flags = GENL_ADMIN_PERM,
9655 .internal_flags = NL80211_FLAG_NEED_RTNL,
9656 },
9657 {
9658 .cmd = NL80211_CMD_REQ_SET_REG,
9659 .doit = nl80211_req_set_reg,
9660 .policy = nl80211_policy,
9661 .flags = GENL_ADMIN_PERM,
9662 },
9663 {
9664 .cmd = NL80211_CMD_GET_MESH_CONFIG,
9665 .doit = nl80211_get_mesh_config,
9666 .policy = nl80211_policy,
9667 /* can be retrieved by unprivileged users */
9668 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9669 NL80211_FLAG_NEED_RTNL,
9670 },
9671 {
9672 .cmd = NL80211_CMD_SET_MESH_CONFIG,
9673 .doit = nl80211_update_mesh_config,
9674 .policy = nl80211_policy,
9675 .flags = GENL_ADMIN_PERM,
9676 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9677 NL80211_FLAG_NEED_RTNL,
9678 },
9679 {
9680 .cmd = NL80211_CMD_TRIGGER_SCAN,
9681 .doit = nl80211_trigger_scan,
9682 .policy = nl80211_policy,
9683 .flags = GENL_ADMIN_PERM,
9684 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9685 NL80211_FLAG_NEED_RTNL,
9686 },
9687 {
9688 .cmd = NL80211_CMD_GET_SCAN,
9689 .policy = nl80211_policy,
9690 .dumpit = nl80211_dump_scan,
9691 },
9692 {
9693 .cmd = NL80211_CMD_START_SCHED_SCAN,
9694 .doit = nl80211_start_sched_scan,
9695 .policy = nl80211_policy,
9696 .flags = GENL_ADMIN_PERM,
9697 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9698 NL80211_FLAG_NEED_RTNL,
9699 },
9700 {
9701 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
9702 .doit = nl80211_stop_sched_scan,
9703 .policy = nl80211_policy,
9704 .flags = GENL_ADMIN_PERM,
9705 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9706 NL80211_FLAG_NEED_RTNL,
9707 },
9708 {
9709 .cmd = NL80211_CMD_AUTHENTICATE,
9710 .doit = nl80211_authenticate,
9711 .policy = nl80211_policy,
9712 .flags = GENL_ADMIN_PERM,
9713 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9714 NL80211_FLAG_NEED_RTNL,
9715 },
9716 {
9717 .cmd = NL80211_CMD_ASSOCIATE,
9718 .doit = nl80211_associate,
9719 .policy = nl80211_policy,
9720 .flags = GENL_ADMIN_PERM,
9721 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9722 NL80211_FLAG_NEED_RTNL,
9723 },
9724 {
9725 .cmd = NL80211_CMD_DEAUTHENTICATE,
9726 .doit = nl80211_deauthenticate,
9727 .policy = nl80211_policy,
9728 .flags = GENL_ADMIN_PERM,
9729 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9730 NL80211_FLAG_NEED_RTNL,
9731 },
9732 {
9733 .cmd = NL80211_CMD_DISASSOCIATE,
9734 .doit = nl80211_disassociate,
9735 .policy = nl80211_policy,
9736 .flags = GENL_ADMIN_PERM,
9737 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9738 NL80211_FLAG_NEED_RTNL,
9739 },
9740 {
9741 .cmd = NL80211_CMD_JOIN_IBSS,
9742 .doit = nl80211_join_ibss,
9743 .policy = nl80211_policy,
9744 .flags = GENL_ADMIN_PERM,
9745 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9746 NL80211_FLAG_NEED_RTNL,
9747 },
9748 {
9749 .cmd = NL80211_CMD_LEAVE_IBSS,
9750 .doit = nl80211_leave_ibss,
9751 .policy = nl80211_policy,
9752 .flags = GENL_ADMIN_PERM,
9753 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9754 NL80211_FLAG_NEED_RTNL,
9755 },
9756 #ifdef CONFIG_NL80211_TESTMODE
9757 {
9758 .cmd = NL80211_CMD_TESTMODE,
9759 .doit = nl80211_testmode_do,
9760 .dumpit = nl80211_testmode_dump,
9761 .policy = nl80211_policy,
9762 .flags = GENL_ADMIN_PERM,
9763 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9764 NL80211_FLAG_NEED_RTNL,
9765 },
9766 #endif
9767 {
9768 .cmd = NL80211_CMD_CONNECT,
9769 .doit = nl80211_connect,
9770 .policy = nl80211_policy,
9771 .flags = GENL_ADMIN_PERM,
9772 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9773 NL80211_FLAG_NEED_RTNL,
9774 },
9775 {
9776 .cmd = NL80211_CMD_DISCONNECT,
9777 .doit = nl80211_disconnect,
9778 .policy = nl80211_policy,
9779 .flags = GENL_ADMIN_PERM,
9780 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9781 NL80211_FLAG_NEED_RTNL,
9782 },
9783 {
9784 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
9785 .doit = nl80211_wiphy_netns,
9786 .policy = nl80211_policy,
9787 .flags = GENL_ADMIN_PERM,
9788 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9789 NL80211_FLAG_NEED_RTNL,
9790 },
9791 {
9792 .cmd = NL80211_CMD_GET_SURVEY,
9793 .policy = nl80211_policy,
9794 .dumpit = nl80211_dump_survey,
9795 },
9796 {
9797 .cmd = NL80211_CMD_SET_PMKSA,
9798 .doit = nl80211_setdel_pmksa,
9799 .policy = nl80211_policy,
9800 .flags = GENL_ADMIN_PERM,
9801 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9802 NL80211_FLAG_NEED_RTNL,
9803 },
9804 {
9805 .cmd = NL80211_CMD_DEL_PMKSA,
9806 .doit = nl80211_setdel_pmksa,
9807 .policy = nl80211_policy,
9808 .flags = GENL_ADMIN_PERM,
9809 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9810 NL80211_FLAG_NEED_RTNL,
9811 },
9812 {
9813 .cmd = NL80211_CMD_FLUSH_PMKSA,
9814 .doit = nl80211_flush_pmksa,
9815 .policy = nl80211_policy,
9816 .flags = GENL_ADMIN_PERM,
9817 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9818 NL80211_FLAG_NEED_RTNL,
9819 },
9820 {
9821 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
9822 .doit = nl80211_remain_on_channel,
9823 .policy = nl80211_policy,
9824 .flags = GENL_ADMIN_PERM,
9825 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9826 NL80211_FLAG_NEED_RTNL,
9827 },
9828 {
9829 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
9830 .doit = nl80211_cancel_remain_on_channel,
9831 .policy = nl80211_policy,
9832 .flags = GENL_ADMIN_PERM,
9833 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9834 NL80211_FLAG_NEED_RTNL,
9835 },
9836 {
9837 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
9838 .doit = nl80211_set_tx_bitrate_mask,
9839 .policy = nl80211_policy,
9840 .flags = GENL_ADMIN_PERM,
9841 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9842 NL80211_FLAG_NEED_RTNL,
9843 },
9844 {
9845 .cmd = NL80211_CMD_REGISTER_FRAME,
9846 .doit = nl80211_register_mgmt,
9847 .policy = nl80211_policy,
9848 .flags = GENL_ADMIN_PERM,
9849 .internal_flags = NL80211_FLAG_NEED_WDEV |
9850 NL80211_FLAG_NEED_RTNL,
9851 },
9852 {
9853 .cmd = NL80211_CMD_FRAME,
9854 .doit = nl80211_tx_mgmt,
9855 .policy = nl80211_policy,
9856 .flags = GENL_ADMIN_PERM,
9857 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9858 NL80211_FLAG_NEED_RTNL,
9859 },
9860 {
9861 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
9862 .doit = nl80211_tx_mgmt_cancel_wait,
9863 .policy = nl80211_policy,
9864 .flags = GENL_ADMIN_PERM,
9865 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9866 NL80211_FLAG_NEED_RTNL,
9867 },
9868 {
9869 .cmd = NL80211_CMD_SET_POWER_SAVE,
9870 .doit = nl80211_set_power_save,
9871 .policy = nl80211_policy,
9872 .flags = GENL_ADMIN_PERM,
9873 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9874 NL80211_FLAG_NEED_RTNL,
9875 },
9876 {
9877 .cmd = NL80211_CMD_GET_POWER_SAVE,
9878 .doit = nl80211_get_power_save,
9879 .policy = nl80211_policy,
9880 /* can be retrieved by unprivileged users */
9881 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9882 NL80211_FLAG_NEED_RTNL,
9883 },
9884 {
9885 .cmd = NL80211_CMD_SET_CQM,
9886 .doit = nl80211_set_cqm,
9887 .policy = nl80211_policy,
9888 .flags = GENL_ADMIN_PERM,
9889 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9890 NL80211_FLAG_NEED_RTNL,
9891 },
9892 {
9893 .cmd = NL80211_CMD_SET_CHANNEL,
9894 .doit = nl80211_set_channel,
9895 .policy = nl80211_policy,
9896 .flags = GENL_ADMIN_PERM,
9897 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9898 NL80211_FLAG_NEED_RTNL,
9899 },
9900 {
9901 .cmd = NL80211_CMD_SET_WDS_PEER,
9902 .doit = nl80211_set_wds_peer,
9903 .policy = nl80211_policy,
9904 .flags = GENL_ADMIN_PERM,
9905 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9906 NL80211_FLAG_NEED_RTNL,
9907 },
9908 {
9909 .cmd = NL80211_CMD_JOIN_MESH,
9910 .doit = nl80211_join_mesh,
9911 .policy = nl80211_policy,
9912 .flags = GENL_ADMIN_PERM,
9913 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9914 NL80211_FLAG_NEED_RTNL,
9915 },
9916 {
9917 .cmd = NL80211_CMD_LEAVE_MESH,
9918 .doit = nl80211_leave_mesh,
9919 .policy = nl80211_policy,
9920 .flags = GENL_ADMIN_PERM,
9921 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9922 NL80211_FLAG_NEED_RTNL,
9923 },
9924 #ifdef CONFIG_PM
9925 {
9926 .cmd = NL80211_CMD_GET_WOWLAN,
9927 .doit = nl80211_get_wowlan,
9928 .policy = nl80211_policy,
9929 /* can be retrieved by unprivileged users */
9930 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9931 NL80211_FLAG_NEED_RTNL,
9932 },
9933 {
9934 .cmd = NL80211_CMD_SET_WOWLAN,
9935 .doit = nl80211_set_wowlan,
9936 .policy = nl80211_policy,
9937 .flags = GENL_ADMIN_PERM,
9938 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9939 NL80211_FLAG_NEED_RTNL,
9940 },
9941 #endif
9942 {
9943 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
9944 .doit = nl80211_set_rekey_data,
9945 .policy = nl80211_policy,
9946 .flags = GENL_ADMIN_PERM,
9947 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9948 NL80211_FLAG_NEED_RTNL,
9949 },
9950 {
9951 .cmd = NL80211_CMD_TDLS_MGMT,
9952 .doit = nl80211_tdls_mgmt,
9953 .policy = nl80211_policy,
9954 .flags = GENL_ADMIN_PERM,
9955 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9956 NL80211_FLAG_NEED_RTNL,
9957 },
9958 {
9959 .cmd = NL80211_CMD_TDLS_OPER,
9960 .doit = nl80211_tdls_oper,
9961 .policy = nl80211_policy,
9962 .flags = GENL_ADMIN_PERM,
9963 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9964 NL80211_FLAG_NEED_RTNL,
9965 },
9966 {
9967 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
9968 .doit = nl80211_register_unexpected_frame,
9969 .policy = nl80211_policy,
9970 .flags = GENL_ADMIN_PERM,
9971 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9972 NL80211_FLAG_NEED_RTNL,
9973 },
9974 {
9975 .cmd = NL80211_CMD_PROBE_CLIENT,
9976 .doit = nl80211_probe_client,
9977 .policy = nl80211_policy,
9978 .flags = GENL_ADMIN_PERM,
9979 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9980 NL80211_FLAG_NEED_RTNL,
9981 },
9982 {
9983 .cmd = NL80211_CMD_REGISTER_BEACONS,
9984 .doit = nl80211_register_beacons,
9985 .policy = nl80211_policy,
9986 .flags = GENL_ADMIN_PERM,
9987 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9988 NL80211_FLAG_NEED_RTNL,
9989 },
9990 {
9991 .cmd = NL80211_CMD_SET_NOACK_MAP,
9992 .doit = nl80211_set_noack_map,
9993 .policy = nl80211_policy,
9994 .flags = GENL_ADMIN_PERM,
9995 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9996 NL80211_FLAG_NEED_RTNL,
9997 },
9998 {
9999 .cmd = NL80211_CMD_START_P2P_DEVICE,
10000 .doit = nl80211_start_p2p_device,
10001 .policy = nl80211_policy,
10002 .flags = GENL_ADMIN_PERM,
10003 .internal_flags = NL80211_FLAG_NEED_WDEV |
10004 NL80211_FLAG_NEED_RTNL,
10005 },
10006 {
10007 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
10008 .doit = nl80211_stop_p2p_device,
10009 .policy = nl80211_policy,
10010 .flags = GENL_ADMIN_PERM,
10011 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10012 NL80211_FLAG_NEED_RTNL,
10013 },
10014 {
10015 .cmd = NL80211_CMD_SET_MCAST_RATE,
10016 .doit = nl80211_set_mcast_rate,
10017 .policy = nl80211_policy,
10018 .flags = GENL_ADMIN_PERM,
10019 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10020 NL80211_FLAG_NEED_RTNL,
10021 },
10022 {
10023 .cmd = NL80211_CMD_SET_MAC_ACL,
10024 .doit = nl80211_set_mac_acl,
10025 .policy = nl80211_policy,
10026 .flags = GENL_ADMIN_PERM,
10027 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10028 NL80211_FLAG_NEED_RTNL,
10029 },
10030 {
10031 .cmd = NL80211_CMD_RADAR_DETECT,
10032 .doit = nl80211_start_radar_detection,
10033 .policy = nl80211_policy,
10034 .flags = GENL_ADMIN_PERM,
10035 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10036 NL80211_FLAG_NEED_RTNL,
10037 },
10038 {
10039 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
10040 .doit = nl80211_get_protocol_features,
10041 .policy = nl80211_policy,
10042 },
10043 {
10044 .cmd = NL80211_CMD_UPDATE_FT_IES,
10045 .doit = nl80211_update_ft_ies,
10046 .policy = nl80211_policy,
10047 .flags = GENL_ADMIN_PERM,
10048 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10049 NL80211_FLAG_NEED_RTNL,
10050 },
10051 {
10052 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
10053 .doit = nl80211_crit_protocol_start,
10054 .policy = nl80211_policy,
10055 .flags = GENL_ADMIN_PERM,
10056 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10057 NL80211_FLAG_NEED_RTNL,
10058 },
10059 {
10060 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
10061 .doit = nl80211_crit_protocol_stop,
10062 .policy = nl80211_policy,
10063 .flags = GENL_ADMIN_PERM,
10064 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10065 NL80211_FLAG_NEED_RTNL,
10066 },
10067 {
10068 .cmd = NL80211_CMD_GET_COALESCE,
10069 .doit = nl80211_get_coalesce,
10070 .policy = nl80211_policy,
10071 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10072 NL80211_FLAG_NEED_RTNL,
10073 },
10074 {
10075 .cmd = NL80211_CMD_SET_COALESCE,
10076 .doit = nl80211_set_coalesce,
10077 .policy = nl80211_policy,
10078 .flags = GENL_ADMIN_PERM,
10079 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10080 NL80211_FLAG_NEED_RTNL,
10081 },
10082 {
10083 .cmd = NL80211_CMD_CHANNEL_SWITCH,
10084 .doit = nl80211_channel_switch,
10085 .policy = nl80211_policy,
10086 .flags = GENL_ADMIN_PERM,
10087 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10088 NL80211_FLAG_NEED_RTNL,
10089 },
10090 {
10091 .cmd = NL80211_CMD_VENDOR,
10092 .doit = nl80211_vendor_cmd,
10093 .policy = nl80211_policy,
10094 .flags = GENL_ADMIN_PERM,
10095 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10096 NL80211_FLAG_NEED_RTNL,
10097 },
10098 {
10099 .cmd = NL80211_CMD_SET_QOS_MAP,
10100 .doit = nl80211_set_qos_map,
10101 .policy = nl80211_policy,
10102 .flags = GENL_ADMIN_PERM,
10103 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10104 NL80211_FLAG_NEED_RTNL,
10105 },
10106 };
10107
10108 /* notification functions */
10109
10110 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
10111 enum nl80211_commands cmd)
10112 {
10113 struct sk_buff *msg;
10114 struct nl80211_dump_wiphy_state state = {};
10115
10116 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
10117 cmd != NL80211_CMD_DEL_WIPHY);
10118
10119 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10120 if (!msg)
10121 return;
10122
10123 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
10124 nlmsg_free(msg);
10125 return;
10126 }
10127
10128 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10129 NL80211_MCGRP_CONFIG, GFP_KERNEL);
10130 }
10131
10132 static int nl80211_add_scan_req(struct sk_buff *msg,
10133 struct cfg80211_registered_device *rdev)
10134 {
10135 struct cfg80211_scan_request *req = rdev->scan_req;
10136 struct nlattr *nest;
10137 int i;
10138
10139 if (WARN_ON(!req))
10140 return 0;
10141
10142 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
10143 if (!nest)
10144 goto nla_put_failure;
10145 for (i = 0; i < req->n_ssids; i++) {
10146 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
10147 goto nla_put_failure;
10148 }
10149 nla_nest_end(msg, nest);
10150
10151 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10152 if (!nest)
10153 goto nla_put_failure;
10154 for (i = 0; i < req->n_channels; i++) {
10155 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10156 goto nla_put_failure;
10157 }
10158 nla_nest_end(msg, nest);
10159
10160 if (req->ie &&
10161 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
10162 goto nla_put_failure;
10163
10164 if (req->flags &&
10165 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
10166 goto nla_put_failure;
10167
10168 return 0;
10169 nla_put_failure:
10170 return -ENOBUFS;
10171 }
10172
10173 static int nl80211_send_scan_msg(struct sk_buff *msg,
10174 struct cfg80211_registered_device *rdev,
10175 struct wireless_dev *wdev,
10176 u32 portid, u32 seq, int flags,
10177 u32 cmd)
10178 {
10179 void *hdr;
10180
10181 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10182 if (!hdr)
10183 return -1;
10184
10185 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10186 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10187 wdev->netdev->ifindex)) ||
10188 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10189 goto nla_put_failure;
10190
10191 /* ignore errors and send incomplete event anyway */
10192 nl80211_add_scan_req(msg, rdev);
10193
10194 return genlmsg_end(msg, hdr);
10195
10196 nla_put_failure:
10197 genlmsg_cancel(msg, hdr);
10198 return -EMSGSIZE;
10199 }
10200
10201 static int
10202 nl80211_send_sched_scan_msg(struct sk_buff *msg,
10203 struct cfg80211_registered_device *rdev,
10204 struct net_device *netdev,
10205 u32 portid, u32 seq, int flags, u32 cmd)
10206 {
10207 void *hdr;
10208
10209 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10210 if (!hdr)
10211 return -1;
10212
10213 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10214 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10215 goto nla_put_failure;
10216
10217 return genlmsg_end(msg, hdr);
10218
10219 nla_put_failure:
10220 genlmsg_cancel(msg, hdr);
10221 return -EMSGSIZE;
10222 }
10223
10224 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
10225 struct wireless_dev *wdev)
10226 {
10227 struct sk_buff *msg;
10228
10229 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10230 if (!msg)
10231 return;
10232
10233 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10234 NL80211_CMD_TRIGGER_SCAN) < 0) {
10235 nlmsg_free(msg);
10236 return;
10237 }
10238
10239 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10240 NL80211_MCGRP_SCAN, GFP_KERNEL);
10241 }
10242
10243 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
10244 struct wireless_dev *wdev, bool aborted)
10245 {
10246 struct sk_buff *msg;
10247
10248 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10249 if (!msg)
10250 return NULL;
10251
10252 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10253 aborted ? NL80211_CMD_SCAN_ABORTED :
10254 NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
10255 nlmsg_free(msg);
10256 return NULL;
10257 }
10258
10259 return msg;
10260 }
10261
10262 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
10263 struct sk_buff *msg)
10264 {
10265 if (!msg)
10266 return;
10267
10268 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10269 NL80211_MCGRP_SCAN, GFP_KERNEL);
10270 }
10271
10272 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
10273 struct net_device *netdev)
10274 {
10275 struct sk_buff *msg;
10276
10277 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10278 if (!msg)
10279 return;
10280
10281 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
10282 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
10283 nlmsg_free(msg);
10284 return;
10285 }
10286
10287 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10288 NL80211_MCGRP_SCAN, GFP_KERNEL);
10289 }
10290
10291 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
10292 struct net_device *netdev, u32 cmd)
10293 {
10294 struct sk_buff *msg;
10295
10296 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10297 if (!msg)
10298 return;
10299
10300 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
10301 nlmsg_free(msg);
10302 return;
10303 }
10304
10305 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10306 NL80211_MCGRP_SCAN, GFP_KERNEL);
10307 }
10308
10309 /*
10310 * This can happen on global regulatory changes or device specific settings
10311 * based on custom world regulatory domains.
10312 */
10313 void nl80211_send_reg_change_event(struct regulatory_request *request)
10314 {
10315 struct sk_buff *msg;
10316 void *hdr;
10317
10318 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10319 if (!msg)
10320 return;
10321
10322 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
10323 if (!hdr) {
10324 nlmsg_free(msg);
10325 return;
10326 }
10327
10328 /* Userspace can always count this one always being set */
10329 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
10330 goto nla_put_failure;
10331
10332 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
10333 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10334 NL80211_REGDOM_TYPE_WORLD))
10335 goto nla_put_failure;
10336 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
10337 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10338 NL80211_REGDOM_TYPE_CUSTOM_WORLD))
10339 goto nla_put_failure;
10340 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
10341 request->intersect) {
10342 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10343 NL80211_REGDOM_TYPE_INTERSECTION))
10344 goto nla_put_failure;
10345 } else {
10346 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10347 NL80211_REGDOM_TYPE_COUNTRY) ||
10348 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
10349 request->alpha2))
10350 goto nla_put_failure;
10351 }
10352
10353 if (request->wiphy_idx != WIPHY_IDX_INVALID &&
10354 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
10355 goto nla_put_failure;
10356
10357 genlmsg_end(msg, hdr);
10358
10359 rcu_read_lock();
10360 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
10361 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
10362 rcu_read_unlock();
10363
10364 return;
10365
10366 nla_put_failure:
10367 genlmsg_cancel(msg, hdr);
10368 nlmsg_free(msg);
10369 }
10370
10371 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
10372 struct net_device *netdev,
10373 const u8 *buf, size_t len,
10374 enum nl80211_commands cmd, gfp_t gfp)
10375 {
10376 struct sk_buff *msg;
10377 void *hdr;
10378
10379 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10380 if (!msg)
10381 return;
10382
10383 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10384 if (!hdr) {
10385 nlmsg_free(msg);
10386 return;
10387 }
10388
10389 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10390 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10391 nla_put(msg, NL80211_ATTR_FRAME, len, buf))
10392 goto nla_put_failure;
10393
10394 genlmsg_end(msg, hdr);
10395
10396 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10397 NL80211_MCGRP_MLME, gfp);
10398 return;
10399
10400 nla_put_failure:
10401 genlmsg_cancel(msg, hdr);
10402 nlmsg_free(msg);
10403 }
10404
10405 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
10406 struct net_device *netdev, const u8 *buf,
10407 size_t len, gfp_t gfp)
10408 {
10409 nl80211_send_mlme_event(rdev, netdev, buf, len,
10410 NL80211_CMD_AUTHENTICATE, gfp);
10411 }
10412
10413 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
10414 struct net_device *netdev, const u8 *buf,
10415 size_t len, gfp_t gfp)
10416 {
10417 nl80211_send_mlme_event(rdev, netdev, buf, len,
10418 NL80211_CMD_ASSOCIATE, gfp);
10419 }
10420
10421 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
10422 struct net_device *netdev, const u8 *buf,
10423 size_t len, gfp_t gfp)
10424 {
10425 nl80211_send_mlme_event(rdev, netdev, buf, len,
10426 NL80211_CMD_DEAUTHENTICATE, gfp);
10427 }
10428
10429 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
10430 struct net_device *netdev, const u8 *buf,
10431 size_t len, gfp_t gfp)
10432 {
10433 nl80211_send_mlme_event(rdev, netdev, buf, len,
10434 NL80211_CMD_DISASSOCIATE, gfp);
10435 }
10436
10437 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
10438 size_t len)
10439 {
10440 struct wireless_dev *wdev = dev->ieee80211_ptr;
10441 struct wiphy *wiphy = wdev->wiphy;
10442 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10443 const struct ieee80211_mgmt *mgmt = (void *)buf;
10444 u32 cmd;
10445
10446 if (WARN_ON(len < 2))
10447 return;
10448
10449 if (ieee80211_is_deauth(mgmt->frame_control))
10450 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
10451 else
10452 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
10453
10454 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
10455 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC);
10456 }
10457 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
10458
10459 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
10460 struct net_device *netdev, int cmd,
10461 const u8 *addr, gfp_t gfp)
10462 {
10463 struct sk_buff *msg;
10464 void *hdr;
10465
10466 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10467 if (!msg)
10468 return;
10469
10470 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10471 if (!hdr) {
10472 nlmsg_free(msg);
10473 return;
10474 }
10475
10476 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10477 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10478 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
10479 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
10480 goto nla_put_failure;
10481
10482 genlmsg_end(msg, hdr);
10483
10484 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10485 NL80211_MCGRP_MLME, gfp);
10486 return;
10487
10488 nla_put_failure:
10489 genlmsg_cancel(msg, hdr);
10490 nlmsg_free(msg);
10491 }
10492
10493 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
10494 struct net_device *netdev, const u8 *addr,
10495 gfp_t gfp)
10496 {
10497 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
10498 addr, gfp);
10499 }
10500
10501 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
10502 struct net_device *netdev, const u8 *addr,
10503 gfp_t gfp)
10504 {
10505 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
10506 addr, gfp);
10507 }
10508
10509 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
10510 struct net_device *netdev, const u8 *bssid,
10511 const u8 *req_ie, size_t req_ie_len,
10512 const u8 *resp_ie, size_t resp_ie_len,
10513 u16 status, gfp_t gfp)
10514 {
10515 struct sk_buff *msg;
10516 void *hdr;
10517
10518 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10519 if (!msg)
10520 return;
10521
10522 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
10523 if (!hdr) {
10524 nlmsg_free(msg);
10525 return;
10526 }
10527
10528 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10529 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10530 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
10531 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
10532 (req_ie &&
10533 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10534 (resp_ie &&
10535 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10536 goto nla_put_failure;
10537
10538 genlmsg_end(msg, hdr);
10539
10540 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10541 NL80211_MCGRP_MLME, gfp);
10542 return;
10543
10544 nla_put_failure:
10545 genlmsg_cancel(msg, hdr);
10546 nlmsg_free(msg);
10547
10548 }
10549
10550 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
10551 struct net_device *netdev, const u8 *bssid,
10552 const u8 *req_ie, size_t req_ie_len,
10553 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
10554 {
10555 struct sk_buff *msg;
10556 void *hdr;
10557
10558 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10559 if (!msg)
10560 return;
10561
10562 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
10563 if (!hdr) {
10564 nlmsg_free(msg);
10565 return;
10566 }
10567
10568 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10569 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10570 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
10571 (req_ie &&
10572 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10573 (resp_ie &&
10574 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10575 goto nla_put_failure;
10576
10577 genlmsg_end(msg, hdr);
10578
10579 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10580 NL80211_MCGRP_MLME, gfp);
10581 return;
10582
10583 nla_put_failure:
10584 genlmsg_cancel(msg, hdr);
10585 nlmsg_free(msg);
10586
10587 }
10588
10589 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
10590 struct net_device *netdev, u16 reason,
10591 const u8 *ie, size_t ie_len, bool from_ap)
10592 {
10593 struct sk_buff *msg;
10594 void *hdr;
10595
10596 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10597 if (!msg)
10598 return;
10599
10600 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
10601 if (!hdr) {
10602 nlmsg_free(msg);
10603 return;
10604 }
10605
10606 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10607 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10608 (from_ap && reason &&
10609 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
10610 (from_ap &&
10611 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
10612 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
10613 goto nla_put_failure;
10614
10615 genlmsg_end(msg, hdr);
10616
10617 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10618 NL80211_MCGRP_MLME, GFP_KERNEL);
10619 return;
10620
10621 nla_put_failure:
10622 genlmsg_cancel(msg, hdr);
10623 nlmsg_free(msg);
10624
10625 }
10626
10627 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
10628 struct net_device *netdev, const u8 *bssid,
10629 gfp_t gfp)
10630 {
10631 struct sk_buff *msg;
10632 void *hdr;
10633
10634 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10635 if (!msg)
10636 return;
10637
10638 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
10639 if (!hdr) {
10640 nlmsg_free(msg);
10641 return;
10642 }
10643
10644 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10645 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10646 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10647 goto nla_put_failure;
10648
10649 genlmsg_end(msg, hdr);
10650
10651 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10652 NL80211_MCGRP_MLME, gfp);
10653 return;
10654
10655 nla_put_failure:
10656 genlmsg_cancel(msg, hdr);
10657 nlmsg_free(msg);
10658 }
10659
10660 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
10661 const u8* ie, u8 ie_len, gfp_t gfp)
10662 {
10663 struct wireless_dev *wdev = dev->ieee80211_ptr;
10664 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
10665 struct sk_buff *msg;
10666 void *hdr;
10667
10668 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
10669 return;
10670
10671 trace_cfg80211_notify_new_peer_candidate(dev, addr);
10672
10673 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10674 if (!msg)
10675 return;
10676
10677 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
10678 if (!hdr) {
10679 nlmsg_free(msg);
10680 return;
10681 }
10682
10683 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10684 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10685 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10686 (ie_len && ie &&
10687 nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
10688 goto nla_put_failure;
10689
10690 genlmsg_end(msg, hdr);
10691
10692 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10693 NL80211_MCGRP_MLME, gfp);
10694 return;
10695
10696 nla_put_failure:
10697 genlmsg_cancel(msg, hdr);
10698 nlmsg_free(msg);
10699 }
10700 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
10701
10702 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
10703 struct net_device *netdev, const u8 *addr,
10704 enum nl80211_key_type key_type, int key_id,
10705 const u8 *tsc, gfp_t gfp)
10706 {
10707 struct sk_buff *msg;
10708 void *hdr;
10709
10710 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10711 if (!msg)
10712 return;
10713
10714 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
10715 if (!hdr) {
10716 nlmsg_free(msg);
10717 return;
10718 }
10719
10720 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10721 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10722 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
10723 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
10724 (key_id != -1 &&
10725 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
10726 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
10727 goto nla_put_failure;
10728
10729 genlmsg_end(msg, hdr);
10730
10731 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10732 NL80211_MCGRP_MLME, gfp);
10733 return;
10734
10735 nla_put_failure:
10736 genlmsg_cancel(msg, hdr);
10737 nlmsg_free(msg);
10738 }
10739
10740 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
10741 struct ieee80211_channel *channel_before,
10742 struct ieee80211_channel *channel_after)
10743 {
10744 struct sk_buff *msg;
10745 void *hdr;
10746 struct nlattr *nl_freq;
10747
10748 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
10749 if (!msg)
10750 return;
10751
10752 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
10753 if (!hdr) {
10754 nlmsg_free(msg);
10755 return;
10756 }
10757
10758 /*
10759 * Since we are applying the beacon hint to a wiphy we know its
10760 * wiphy_idx is valid
10761 */
10762 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
10763 goto nla_put_failure;
10764
10765 /* Before */
10766 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
10767 if (!nl_freq)
10768 goto nla_put_failure;
10769 if (nl80211_msg_put_channel(msg, channel_before, false))
10770 goto nla_put_failure;
10771 nla_nest_end(msg, nl_freq);
10772
10773 /* After */
10774 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
10775 if (!nl_freq)
10776 goto nla_put_failure;
10777 if (nl80211_msg_put_channel(msg, channel_after, false))
10778 goto nla_put_failure;
10779 nla_nest_end(msg, nl_freq);
10780
10781 genlmsg_end(msg, hdr);
10782
10783 rcu_read_lock();
10784 genlmsg_multicast_allns(&nl80211_fam, msg, 0,
10785 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
10786 rcu_read_unlock();
10787
10788 return;
10789
10790 nla_put_failure:
10791 genlmsg_cancel(msg, hdr);
10792 nlmsg_free(msg);
10793 }
10794
10795 static void nl80211_send_remain_on_chan_event(
10796 int cmd, struct cfg80211_registered_device *rdev,
10797 struct wireless_dev *wdev, u64 cookie,
10798 struct ieee80211_channel *chan,
10799 unsigned int duration, gfp_t gfp)
10800 {
10801 struct sk_buff *msg;
10802 void *hdr;
10803
10804 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10805 if (!msg)
10806 return;
10807
10808 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10809 if (!hdr) {
10810 nlmsg_free(msg);
10811 return;
10812 }
10813
10814 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10815 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10816 wdev->netdev->ifindex)) ||
10817 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10818 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
10819 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
10820 NL80211_CHAN_NO_HT) ||
10821 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
10822 goto nla_put_failure;
10823
10824 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
10825 nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
10826 goto nla_put_failure;
10827
10828 genlmsg_end(msg, hdr);
10829
10830 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10831 NL80211_MCGRP_MLME, gfp);
10832 return;
10833
10834 nla_put_failure:
10835 genlmsg_cancel(msg, hdr);
10836 nlmsg_free(msg);
10837 }
10838
10839 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
10840 struct ieee80211_channel *chan,
10841 unsigned int duration, gfp_t gfp)
10842 {
10843 struct wiphy *wiphy = wdev->wiphy;
10844 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10845
10846 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
10847 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
10848 rdev, wdev, cookie, chan,
10849 duration, gfp);
10850 }
10851 EXPORT_SYMBOL(cfg80211_ready_on_channel);
10852
10853 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
10854 struct ieee80211_channel *chan,
10855 gfp_t gfp)
10856 {
10857 struct wiphy *wiphy = wdev->wiphy;
10858 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10859
10860 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
10861 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10862 rdev, wdev, cookie, chan, 0, gfp);
10863 }
10864 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
10865
10866 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
10867 struct station_info *sinfo, gfp_t gfp)
10868 {
10869 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10870 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10871 struct sk_buff *msg;
10872
10873 trace_cfg80211_new_sta(dev, mac_addr, sinfo);
10874
10875 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10876 if (!msg)
10877 return;
10878
10879 if (nl80211_send_station(msg, 0, 0, 0,
10880 rdev, dev, mac_addr, sinfo) < 0) {
10881 nlmsg_free(msg);
10882 return;
10883 }
10884
10885 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10886 NL80211_MCGRP_MLME, gfp);
10887 }
10888 EXPORT_SYMBOL(cfg80211_new_sta);
10889
10890 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
10891 {
10892 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10893 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10894 struct sk_buff *msg;
10895 void *hdr;
10896
10897 trace_cfg80211_del_sta(dev, mac_addr);
10898
10899 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10900 if (!msg)
10901 return;
10902
10903 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
10904 if (!hdr) {
10905 nlmsg_free(msg);
10906 return;
10907 }
10908
10909 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10910 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
10911 goto nla_put_failure;
10912
10913 genlmsg_end(msg, hdr);
10914
10915 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10916 NL80211_MCGRP_MLME, gfp);
10917 return;
10918
10919 nla_put_failure:
10920 genlmsg_cancel(msg, hdr);
10921 nlmsg_free(msg);
10922 }
10923 EXPORT_SYMBOL(cfg80211_del_sta);
10924
10925 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
10926 enum nl80211_connect_failed_reason reason,
10927 gfp_t gfp)
10928 {
10929 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10930 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10931 struct sk_buff *msg;
10932 void *hdr;
10933
10934 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10935 if (!msg)
10936 return;
10937
10938 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
10939 if (!hdr) {
10940 nlmsg_free(msg);
10941 return;
10942 }
10943
10944 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10945 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
10946 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
10947 goto nla_put_failure;
10948
10949 genlmsg_end(msg, hdr);
10950
10951 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10952 NL80211_MCGRP_MLME, gfp);
10953 return;
10954
10955 nla_put_failure:
10956 genlmsg_cancel(msg, hdr);
10957 nlmsg_free(msg);
10958 }
10959 EXPORT_SYMBOL(cfg80211_conn_failed);
10960
10961 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
10962 const u8 *addr, gfp_t gfp)
10963 {
10964 struct wireless_dev *wdev = dev->ieee80211_ptr;
10965 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
10966 struct sk_buff *msg;
10967 void *hdr;
10968 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
10969
10970 if (!nlportid)
10971 return false;
10972
10973 msg = nlmsg_new(100, gfp);
10974 if (!msg)
10975 return true;
10976
10977 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10978 if (!hdr) {
10979 nlmsg_free(msg);
10980 return true;
10981 }
10982
10983 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10984 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10985 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
10986 goto nla_put_failure;
10987
10988 genlmsg_end(msg, hdr);
10989 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10990 return true;
10991
10992 nla_put_failure:
10993 genlmsg_cancel(msg, hdr);
10994 nlmsg_free(msg);
10995 return true;
10996 }
10997
10998 bool cfg80211_rx_spurious_frame(struct net_device *dev,
10999 const u8 *addr, gfp_t gfp)
11000 {
11001 struct wireless_dev *wdev = dev->ieee80211_ptr;
11002 bool ret;
11003
11004 trace_cfg80211_rx_spurious_frame(dev, addr);
11005
11006 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11007 wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
11008 trace_cfg80211_return_bool(false);
11009 return false;
11010 }
11011 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
11012 addr, gfp);
11013 trace_cfg80211_return_bool(ret);
11014 return ret;
11015 }
11016 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
11017
11018 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
11019 const u8 *addr, gfp_t gfp)
11020 {
11021 struct wireless_dev *wdev = dev->ieee80211_ptr;
11022 bool ret;
11023
11024 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
11025
11026 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11027 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11028 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
11029 trace_cfg80211_return_bool(false);
11030 return false;
11031 }
11032 ret = __nl80211_unexpected_frame(dev,
11033 NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
11034 addr, gfp);
11035 trace_cfg80211_return_bool(ret);
11036 return ret;
11037 }
11038 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
11039
11040 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
11041 struct wireless_dev *wdev, u32 nlportid,
11042 int freq, int sig_dbm,
11043 const u8 *buf, size_t len, u32 flags, gfp_t gfp)
11044 {
11045 struct net_device *netdev = wdev->netdev;
11046 struct sk_buff *msg;
11047 void *hdr;
11048
11049 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11050 if (!msg)
11051 return -ENOMEM;
11052
11053 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11054 if (!hdr) {
11055 nlmsg_free(msg);
11056 return -ENOMEM;
11057 }
11058
11059 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11060 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11061 netdev->ifindex)) ||
11062 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11063 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
11064 (sig_dbm &&
11065 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11066 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11067 (flags &&
11068 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
11069 goto nla_put_failure;
11070
11071 genlmsg_end(msg, hdr);
11072
11073 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11074
11075 nla_put_failure:
11076 genlmsg_cancel(msg, hdr);
11077 nlmsg_free(msg);
11078 return -ENOBUFS;
11079 }
11080
11081 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
11082 const u8 *buf, size_t len, bool ack, gfp_t gfp)
11083 {
11084 struct wiphy *wiphy = wdev->wiphy;
11085 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11086 struct net_device *netdev = wdev->netdev;
11087 struct sk_buff *msg;
11088 void *hdr;
11089
11090 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
11091
11092 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11093 if (!msg)
11094 return;
11095
11096 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
11097 if (!hdr) {
11098 nlmsg_free(msg);
11099 return;
11100 }
11101
11102 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11103 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11104 netdev->ifindex)) ||
11105 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11106 nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11107 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11108 (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
11109 goto nla_put_failure;
11110
11111 genlmsg_end(msg, hdr);
11112
11113 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11114 NL80211_MCGRP_MLME, gfp);
11115 return;
11116
11117 nla_put_failure:
11118 genlmsg_cancel(msg, hdr);
11119 nlmsg_free(msg);
11120 }
11121 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
11122
11123 void cfg80211_cqm_rssi_notify(struct net_device *dev,
11124 enum nl80211_cqm_rssi_threshold_event rssi_event,
11125 gfp_t gfp)
11126 {
11127 struct wireless_dev *wdev = dev->ieee80211_ptr;
11128 struct wiphy *wiphy = wdev->wiphy;
11129 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11130 struct sk_buff *msg;
11131 struct nlattr *pinfoattr;
11132 void *hdr;
11133
11134 trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
11135
11136 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11137 if (!msg)
11138 return;
11139
11140 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11141 if (!hdr) {
11142 nlmsg_free(msg);
11143 return;
11144 }
11145
11146 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11147 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
11148 goto nla_put_failure;
11149
11150 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11151 if (!pinfoattr)
11152 goto nla_put_failure;
11153
11154 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
11155 rssi_event))
11156 goto nla_put_failure;
11157
11158 nla_nest_end(msg, pinfoattr);
11159
11160 genlmsg_end(msg, hdr);
11161
11162 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11163 NL80211_MCGRP_MLME, gfp);
11164 return;
11165
11166 nla_put_failure:
11167 genlmsg_cancel(msg, hdr);
11168 nlmsg_free(msg);
11169 }
11170 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
11171
11172 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
11173 struct net_device *netdev, const u8 *bssid,
11174 const u8 *replay_ctr, gfp_t gfp)
11175 {
11176 struct sk_buff *msg;
11177 struct nlattr *rekey_attr;
11178 void *hdr;
11179
11180 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11181 if (!msg)
11182 return;
11183
11184 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
11185 if (!hdr) {
11186 nlmsg_free(msg);
11187 return;
11188 }
11189
11190 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11191 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11192 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11193 goto nla_put_failure;
11194
11195 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
11196 if (!rekey_attr)
11197 goto nla_put_failure;
11198
11199 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
11200 NL80211_REPLAY_CTR_LEN, replay_ctr))
11201 goto nla_put_failure;
11202
11203 nla_nest_end(msg, rekey_attr);
11204
11205 genlmsg_end(msg, hdr);
11206
11207 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11208 NL80211_MCGRP_MLME, gfp);
11209 return;
11210
11211 nla_put_failure:
11212 genlmsg_cancel(msg, hdr);
11213 nlmsg_free(msg);
11214 }
11215
11216 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
11217 const u8 *replay_ctr, gfp_t gfp)
11218 {
11219 struct wireless_dev *wdev = dev->ieee80211_ptr;
11220 struct wiphy *wiphy = wdev->wiphy;
11221 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11222
11223 trace_cfg80211_gtk_rekey_notify(dev, bssid);
11224 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
11225 }
11226 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
11227
11228 static void
11229 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
11230 struct net_device *netdev, int index,
11231 const u8 *bssid, bool preauth, gfp_t gfp)
11232 {
11233 struct sk_buff *msg;
11234 struct nlattr *attr;
11235 void *hdr;
11236
11237 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11238 if (!msg)
11239 return;
11240
11241 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
11242 if (!hdr) {
11243 nlmsg_free(msg);
11244 return;
11245 }
11246
11247 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11248 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11249 goto nla_put_failure;
11250
11251 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
11252 if (!attr)
11253 goto nla_put_failure;
11254
11255 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
11256 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
11257 (preauth &&
11258 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
11259 goto nla_put_failure;
11260
11261 nla_nest_end(msg, attr);
11262
11263 genlmsg_end(msg, hdr);
11264
11265 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11266 NL80211_MCGRP_MLME, gfp);
11267 return;
11268
11269 nla_put_failure:
11270 genlmsg_cancel(msg, hdr);
11271 nlmsg_free(msg);
11272 }
11273
11274 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
11275 const u8 *bssid, bool preauth, gfp_t gfp)
11276 {
11277 struct wireless_dev *wdev = dev->ieee80211_ptr;
11278 struct wiphy *wiphy = wdev->wiphy;
11279 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11280
11281 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
11282 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
11283 }
11284 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
11285
11286 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
11287 struct net_device *netdev,
11288 struct cfg80211_chan_def *chandef,
11289 gfp_t gfp)
11290 {
11291 struct sk_buff *msg;
11292 void *hdr;
11293
11294 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11295 if (!msg)
11296 return;
11297
11298 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
11299 if (!hdr) {
11300 nlmsg_free(msg);
11301 return;
11302 }
11303
11304 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11305 goto nla_put_failure;
11306
11307 if (nl80211_send_chandef(msg, chandef))
11308 goto nla_put_failure;
11309
11310 genlmsg_end(msg, hdr);
11311
11312 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11313 NL80211_MCGRP_MLME, gfp);
11314 return;
11315
11316 nla_put_failure:
11317 genlmsg_cancel(msg, hdr);
11318 nlmsg_free(msg);
11319 }
11320
11321 void cfg80211_ch_switch_notify(struct net_device *dev,
11322 struct cfg80211_chan_def *chandef)
11323 {
11324 struct wireless_dev *wdev = dev->ieee80211_ptr;
11325 struct wiphy *wiphy = wdev->wiphy;
11326 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11327
11328 ASSERT_WDEV_LOCK(wdev);
11329
11330 trace_cfg80211_ch_switch_notify(dev, chandef);
11331
11332 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11333 wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11334 wdev->iftype != NL80211_IFTYPE_ADHOC &&
11335 wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11336 return;
11337
11338 wdev->chandef = *chandef;
11339 wdev->preset_chandef = *chandef;
11340 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
11341 }
11342 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
11343
11344 void cfg80211_cqm_txe_notify(struct net_device *dev,
11345 const u8 *peer, u32 num_packets,
11346 u32 rate, u32 intvl, gfp_t gfp)
11347 {
11348 struct wireless_dev *wdev = dev->ieee80211_ptr;
11349 struct wiphy *wiphy = wdev->wiphy;
11350 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11351 struct sk_buff *msg;
11352 struct nlattr *pinfoattr;
11353 void *hdr;
11354
11355 msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11356 if (!msg)
11357 return;
11358
11359 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11360 if (!hdr) {
11361 nlmsg_free(msg);
11362 return;
11363 }
11364
11365 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11366 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11367 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
11368 goto nla_put_failure;
11369
11370 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11371 if (!pinfoattr)
11372 goto nla_put_failure;
11373
11374 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
11375 goto nla_put_failure;
11376
11377 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
11378 goto nla_put_failure;
11379
11380 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
11381 goto nla_put_failure;
11382
11383 nla_nest_end(msg, pinfoattr);
11384
11385 genlmsg_end(msg, hdr);
11386
11387 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11388 NL80211_MCGRP_MLME, gfp);
11389 return;
11390
11391 nla_put_failure:
11392 genlmsg_cancel(msg, hdr);
11393 nlmsg_free(msg);
11394 }
11395 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
11396
11397 void
11398 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
11399 const struct cfg80211_chan_def *chandef,
11400 enum nl80211_radar_event event,
11401 struct net_device *netdev, gfp_t gfp)
11402 {
11403 struct sk_buff *msg;
11404 void *hdr;
11405
11406 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11407 if (!msg)
11408 return;
11409
11410 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
11411 if (!hdr) {
11412 nlmsg_free(msg);
11413 return;
11414 }
11415
11416 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
11417 goto nla_put_failure;
11418
11419 /* NOP and radar events don't need a netdev parameter */
11420 if (netdev) {
11421 struct wireless_dev *wdev = netdev->ieee80211_ptr;
11422
11423 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11424 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11425 goto nla_put_failure;
11426 }
11427
11428 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
11429 goto nla_put_failure;
11430
11431 if (nl80211_send_chandef(msg, chandef))
11432 goto nla_put_failure;
11433
11434 genlmsg_end(msg, hdr);
11435
11436 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11437 NL80211_MCGRP_MLME, gfp);
11438 return;
11439
11440 nla_put_failure:
11441 genlmsg_cancel(msg, hdr);
11442 nlmsg_free(msg);
11443 }
11444
11445 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
11446 const u8 *peer, u32 num_packets, gfp_t gfp)
11447 {
11448 struct wireless_dev *wdev = dev->ieee80211_ptr;
11449 struct wiphy *wiphy = wdev->wiphy;
11450 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11451 struct sk_buff *msg;
11452 struct nlattr *pinfoattr;
11453 void *hdr;
11454
11455 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
11456
11457 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11458 if (!msg)
11459 return;
11460
11461 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11462 if (!hdr) {
11463 nlmsg_free(msg);
11464 return;
11465 }
11466
11467 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11468 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11469 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
11470 goto nla_put_failure;
11471
11472 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11473 if (!pinfoattr)
11474 goto nla_put_failure;
11475
11476 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
11477 goto nla_put_failure;
11478
11479 nla_nest_end(msg, pinfoattr);
11480
11481 genlmsg_end(msg, hdr);
11482
11483 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11484 NL80211_MCGRP_MLME, gfp);
11485 return;
11486
11487 nla_put_failure:
11488 genlmsg_cancel(msg, hdr);
11489 nlmsg_free(msg);
11490 }
11491 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
11492
11493 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
11494 u64 cookie, bool acked, gfp_t gfp)
11495 {
11496 struct wireless_dev *wdev = dev->ieee80211_ptr;
11497 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11498 struct sk_buff *msg;
11499 void *hdr;
11500
11501 trace_cfg80211_probe_status(dev, addr, cookie, acked);
11502
11503 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11504
11505 if (!msg)
11506 return;
11507
11508 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
11509 if (!hdr) {
11510 nlmsg_free(msg);
11511 return;
11512 }
11513
11514 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11515 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11516 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11517 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11518 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
11519 goto nla_put_failure;
11520
11521 genlmsg_end(msg, hdr);
11522
11523 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11524 NL80211_MCGRP_MLME, gfp);
11525 return;
11526
11527 nla_put_failure:
11528 genlmsg_cancel(msg, hdr);
11529 nlmsg_free(msg);
11530 }
11531 EXPORT_SYMBOL(cfg80211_probe_status);
11532
11533 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
11534 const u8 *frame, size_t len,
11535 int freq, int sig_dbm)
11536 {
11537 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11538 struct sk_buff *msg;
11539 void *hdr;
11540 struct cfg80211_beacon_registration *reg;
11541
11542 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
11543
11544 spin_lock_bh(&rdev->beacon_registrations_lock);
11545 list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11546 msg = nlmsg_new(len + 100, GFP_ATOMIC);
11547 if (!msg) {
11548 spin_unlock_bh(&rdev->beacon_registrations_lock);
11549 return;
11550 }
11551
11552 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11553 if (!hdr)
11554 goto nla_put_failure;
11555
11556 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11557 (freq &&
11558 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
11559 (sig_dbm &&
11560 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11561 nla_put(msg, NL80211_ATTR_FRAME, len, frame))
11562 goto nla_put_failure;
11563
11564 genlmsg_end(msg, hdr);
11565
11566 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
11567 }
11568 spin_unlock_bh(&rdev->beacon_registrations_lock);
11569 return;
11570
11571 nla_put_failure:
11572 spin_unlock_bh(&rdev->beacon_registrations_lock);
11573 if (hdr)
11574 genlmsg_cancel(msg, hdr);
11575 nlmsg_free(msg);
11576 }
11577 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
11578
11579 #ifdef CONFIG_PM
11580 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
11581 struct cfg80211_wowlan_wakeup *wakeup,
11582 gfp_t gfp)
11583 {
11584 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11585 struct sk_buff *msg;
11586 void *hdr;
11587 int size = 200;
11588
11589 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
11590
11591 if (wakeup)
11592 size += wakeup->packet_present_len;
11593
11594 msg = nlmsg_new(size, gfp);
11595 if (!msg)
11596 return;
11597
11598 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
11599 if (!hdr)
11600 goto free_msg;
11601
11602 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11603 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11604 goto free_msg;
11605
11606 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11607 wdev->netdev->ifindex))
11608 goto free_msg;
11609
11610 if (wakeup) {
11611 struct nlattr *reasons;
11612
11613 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
11614 if (!reasons)
11615 goto free_msg;
11616
11617 if (wakeup->disconnect &&
11618 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
11619 goto free_msg;
11620 if (wakeup->magic_pkt &&
11621 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
11622 goto free_msg;
11623 if (wakeup->gtk_rekey_failure &&
11624 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
11625 goto free_msg;
11626 if (wakeup->eap_identity_req &&
11627 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
11628 goto free_msg;
11629 if (wakeup->four_way_handshake &&
11630 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
11631 goto free_msg;
11632 if (wakeup->rfkill_release &&
11633 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
11634 goto free_msg;
11635
11636 if (wakeup->pattern_idx >= 0 &&
11637 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
11638 wakeup->pattern_idx))
11639 goto free_msg;
11640
11641 if (wakeup->tcp_match &&
11642 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
11643 goto free_msg;
11644
11645 if (wakeup->tcp_connlost &&
11646 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
11647 goto free_msg;
11648
11649 if (wakeup->tcp_nomoretokens &&
11650 nla_put_flag(msg,
11651 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
11652 goto free_msg;
11653
11654 if (wakeup->packet) {
11655 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
11656 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
11657
11658 if (!wakeup->packet_80211) {
11659 pkt_attr =
11660 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
11661 len_attr =
11662 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
11663 }
11664
11665 if (wakeup->packet_len &&
11666 nla_put_u32(msg, len_attr, wakeup->packet_len))
11667 goto free_msg;
11668
11669 if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
11670 wakeup->packet))
11671 goto free_msg;
11672 }
11673
11674 nla_nest_end(msg, reasons);
11675 }
11676
11677 genlmsg_end(msg, hdr);
11678
11679 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11680 NL80211_MCGRP_MLME, gfp);
11681 return;
11682
11683 free_msg:
11684 nlmsg_free(msg);
11685 }
11686 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
11687 #endif
11688
11689 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
11690 enum nl80211_tdls_operation oper,
11691 u16 reason_code, gfp_t gfp)
11692 {
11693 struct wireless_dev *wdev = dev->ieee80211_ptr;
11694 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11695 struct sk_buff *msg;
11696 void *hdr;
11697
11698 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
11699 reason_code);
11700
11701 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11702 if (!msg)
11703 return;
11704
11705 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
11706 if (!hdr) {
11707 nlmsg_free(msg);
11708 return;
11709 }
11710
11711 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11712 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11713 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
11714 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
11715 (reason_code > 0 &&
11716 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
11717 goto nla_put_failure;
11718
11719 genlmsg_end(msg, hdr);
11720
11721 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11722 NL80211_MCGRP_MLME, gfp);
11723 return;
11724
11725 nla_put_failure:
11726 genlmsg_cancel(msg, hdr);
11727 nlmsg_free(msg);
11728 }
11729 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
11730
11731 static int nl80211_netlink_notify(struct notifier_block * nb,
11732 unsigned long state,
11733 void *_notify)
11734 {
11735 struct netlink_notify *notify = _notify;
11736 struct cfg80211_registered_device *rdev;
11737 struct wireless_dev *wdev;
11738 struct cfg80211_beacon_registration *reg, *tmp;
11739
11740 if (state != NETLINK_URELEASE)
11741 return NOTIFY_DONE;
11742
11743 rcu_read_lock();
11744
11745 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
11746 bool schedule_destroy_work = false;
11747
11748 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
11749 cfg80211_mlme_unregister_socket(wdev, notify->portid);
11750
11751 if (wdev->owner_nlportid == notify->portid)
11752 schedule_destroy_work = true;
11753 }
11754
11755 spin_lock_bh(&rdev->beacon_registrations_lock);
11756 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
11757 list) {
11758 if (reg->nlportid == notify->portid) {
11759 list_del(&reg->list);
11760 kfree(reg);
11761 break;
11762 }
11763 }
11764 spin_unlock_bh(&rdev->beacon_registrations_lock);
11765
11766 if (schedule_destroy_work) {
11767 struct cfg80211_iface_destroy *destroy;
11768
11769 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
11770 if (destroy) {
11771 destroy->nlportid = notify->portid;
11772 spin_lock(&rdev->destroy_list_lock);
11773 list_add(&destroy->list, &rdev->destroy_list);
11774 spin_unlock(&rdev->destroy_list_lock);
11775 schedule_work(&rdev->destroy_work);
11776 }
11777 }
11778 }
11779
11780 rcu_read_unlock();
11781
11782 return NOTIFY_OK;
11783 }
11784
11785 static struct notifier_block nl80211_netlink_notifier = {
11786 .notifier_call = nl80211_netlink_notify,
11787 };
11788
11789 void cfg80211_ft_event(struct net_device *netdev,
11790 struct cfg80211_ft_event_params *ft_event)
11791 {
11792 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
11793 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11794 struct sk_buff *msg;
11795 void *hdr;
11796
11797 trace_cfg80211_ft_event(wiphy, netdev, ft_event);
11798
11799 if (!ft_event->target_ap)
11800 return;
11801
11802 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11803 if (!msg)
11804 return;
11805
11806 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
11807 if (!hdr)
11808 goto out;
11809
11810 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11811 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11812 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
11813 goto out;
11814
11815 if (ft_event->ies &&
11816 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
11817 goto out;
11818 if (ft_event->ric_ies &&
11819 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
11820 ft_event->ric_ies))
11821 goto out;
11822
11823 genlmsg_end(msg, hdr);
11824
11825 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11826 NL80211_MCGRP_MLME, GFP_KERNEL);
11827 return;
11828 out:
11829 nlmsg_free(msg);
11830 }
11831 EXPORT_SYMBOL(cfg80211_ft_event);
11832
11833 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
11834 {
11835 struct cfg80211_registered_device *rdev;
11836 struct sk_buff *msg;
11837 void *hdr;
11838 u32 nlportid;
11839
11840 rdev = wiphy_to_rdev(wdev->wiphy);
11841 if (!rdev->crit_proto_nlportid)
11842 return;
11843
11844 nlportid = rdev->crit_proto_nlportid;
11845 rdev->crit_proto_nlportid = 0;
11846
11847 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11848 if (!msg)
11849 return;
11850
11851 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
11852 if (!hdr)
11853 goto nla_put_failure;
11854
11855 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11856 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11857 goto nla_put_failure;
11858
11859 genlmsg_end(msg, hdr);
11860
11861 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11862 return;
11863
11864 nla_put_failure:
11865 if (hdr)
11866 genlmsg_cancel(msg, hdr);
11867 nlmsg_free(msg);
11868
11869 }
11870 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
11871
11872 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
11873 {
11874 struct wiphy *wiphy = wdev->wiphy;
11875 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11876 struct sk_buff *msg;
11877 void *hdr;
11878
11879 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11880 if (!msg)
11881 return;
11882
11883 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
11884 if (!hdr)
11885 goto out;
11886
11887 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11888 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
11889 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11890 goto out;
11891
11892 genlmsg_end(msg, hdr);
11893
11894 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
11895 NL80211_MCGRP_MLME, GFP_KERNEL);
11896 return;
11897 out:
11898 nlmsg_free(msg);
11899 }
11900
11901 /* initialisation/exit functions */
11902
11903 int nl80211_init(void)
11904 {
11905 int err;
11906
11907 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
11908 nl80211_mcgrps);
11909 if (err)
11910 return err;
11911
11912 err = netlink_register_notifier(&nl80211_netlink_notifier);
11913 if (err)
11914 goto err_out;
11915
11916 return 0;
11917 err_out:
11918 genl_unregister_family(&nl80211_fam);
11919 return err;
11920 }
11921
11922 void nl80211_exit(void)
11923 {
11924 netlink_unregister_notifier(&nl80211_netlink_notifier);
11925 genl_unregister_family(&nl80211_fam);
11926 }
Linux kernel - Deliverables
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